/* ==========================================================================
   Mr. Zebra! v2 — Material 3 (Material You) Design System
   Pure Modern CSS (No Frameworks, No Build Tools)
   ========================================================================== */

/* --- Local Self-Hosted Material Symbols Rounded --- */
@font-face {
    font-family: 'Material Symbols Rounded';
    font-style: normal;
    font-weight: 400;
    font-display: block;
    src: url('../fonts/material-symbols-rounded.woff2') format('woff2');
}

/* --- Google Material Symbols Configuration --- */
.material-symbols-rounded {
    font-family: 'Material Symbols Rounded', sans-serif;
    font-weight: normal;
    font-style: normal;
    font-size: 27px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    -moz-osx-font-smoothing: grayscale;
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    vertical-align: middle;
    user-select: none;
}

/* --- Reset & Global Variables --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

input,
button,
select,
textarea {
    font-family: inherit;
}

:root {
    /* M3 Color System (Enhanced Contrast Logo Green) */
    --md-sys-color-primary: #4E8024;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #EDF7E2;
    --md-sys-color-on-primary-container: #1C4205;

    --md-sys-color-secondary: #0D9488;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #CCFBF1;
    --md-sys-color-on-secondary-container: #115E59;

    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-surface-dim: #F8FAFC;
    --md-sys-color-surface-container: #FFFFFF;
    --md-sys-color-surface-container-high: #F1F5F9;
    --md-sys-color-surface-container-highest: #E2E8F0;

    --md-sys-color-on-surface: #0F172A;
    --md-sys-color-on-surface-variant: #64748B;
    --md-sys-color-outline: #E2E8F0;
    --md-sys-color-outline-variant: #CBD5E1;

    --md-sys-color-error: #DC2626;
    --md-sys-color-error-container: #FEE2E2;
    --md-sys-color-on-error-container: #991B1B;

    /* Accent Badges */
    --badge-indigo-bg: #EDF7E2;
    --badge-indigo-fg: #4E8024;
    --badge-teal-bg: #CCFBF1;
    --badge-teal-fg: #0D9488;
    --badge-amber-bg: #FEF3C7;
    --badge-amber-fg: #D97706;
    --badge-rose-bg: var(--md-sys-color-error-container);
    --badge-rose-fg: var(--md-sys-color-error);

    /* Typography */
    --font-sans: 'Noto Sans TC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Source Code Pro', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Spacing */
    --space-2xs: 0.25rem;
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1.25rem;
    --space-lg: 2rem;
    --space-xl: 3.5rem;

    /* Shapes / Corner Radii */
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Elevation Shadows */
    --elevation-1: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --elevation-2: 0 4px 14px 0 rgba(0, 0, 0, 0.06), 0 1px 4px 0 rgba(0, 0, 0, 0.04);
    --elevation-3: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

    --max-width: 680px;
    --header-height: 64px;
    --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);

    font-size: 18px;
}

html {
    height: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-surface-dim);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Layout --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

main {
    flex: 1;
}

.mono {
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

/* --- Top App Bar / Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--md-sys-color-outline);
    box-shadow: var(--elevation-1);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--md-sys-color-on-surface);
}

.brand-logo {
    height: 42px;
    width: 42px;
    object-fit: contain;
    border-radius: var(--radius-xs);
    background-color: transparent;
    padding: 0;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--md-sys-color-primary);
}

/* 登入狀態膠囊徽章 (高對比鮮明翡翠綠 Live Status Pill) */
.header-status-badge {
    display: inline-flex;
    align-items: center;
    align-self: center;
    gap: 6px;
    height: 28px;
    padding: 0 12px 0 9px;
    background: linear-gradient(135deg, #16A34A 0%, #15803D 100%);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.35);
    transition: all var(--transition);
    user-select: none;
    white-space: nowrap;
    cursor: pointer;
    outline: none;
    touch-action: manipulation;
}

.header-status-badge:focus-visible {
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.4), 0 2px 8px rgba(22, 163, 74, 0.35);
}

@media (hover: hover) and (pointer: fine) {
    .header-status-badge:hover {
        background: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
        box-shadow: 0 4px 12px rgba(22, 163, 74, 0.45);
        transform: translateY(-1px);
        color: #FFFFFF;
    }
}

.header-status-badge:active {
    transform: scale(0.97);
    opacity: 0.9;
}

.header-status-badge .status-icon {
    font-size: 16px;
    color: #FFFFFF;
    opacity: 0.95;
}

.header-status-badge .status-text {
    font-family: var(--font-sans);
    letter-spacing: 0.03em;
    color: #FFFFFF;
}

/* 高對比白色呼吸信號點 (Live Pulse Dot) */
.status-pulse-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: #FFFFFF;
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
    animation: statusPulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes statusPulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.8);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(255, 255, 255, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
    }
}

/* Header Actions & Desktop Nav */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    line-height: 1;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    padding: 0 12px;
    border-radius: var(--radius-full);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link .material-symbols-rounded {
    font-size: 20px;
}

.nav-link:hover {
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.nav-link.active {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-weight: 600;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    transition: background-color var(--transition);
}

.icon-btn:hover {
    background-color: var(--md-sys-color-surface-container-high);
}

.icon-btn .material-symbols-rounded {
    font-size: 26px;
}

.menu-toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
}

.menu-toggle .material-symbols-rounded {
    font-size: 28px;
}

.mobile-nav {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 200;
}

.mobile-nav.open {
    display: block;
}

.mobile-nav-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

.mobile-nav-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 17.5rem;
    height: 100%;
    background-color: var(--md-sys-color-surface);
    border-top-left-radius: var(--radius-xl);
    border-bottom-left-radius: var(--radius-xl);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
    animation: slideInRight 0.25s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--md-sys-color-outline);
    margin-bottom: var(--space-sm);
}

.drawer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--md-sys-color-primary);
    text-decoration: none;
}

.drawer-logo {
    height: 38px;
    width: 38px;
    object-fit: contain;
    border-radius: var(--radius-xs);
    background-color: transparent;
    padding: 0;
}

.drawer-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.drawer-link {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 14px 18px;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--md-sys-color-on-surface);
    font: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
}

.drawer-link .material-symbols-rounded {
    font-size: 26px;
    color: var(--md-sys-color-on-surface-variant);
    transition: color var(--transition);
}

.drawer-link:hover {
    background-color: var(--md-sys-color-surface-container-high);
}

.drawer-link.active {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-weight: 700;
}

.drawer-link.active .material-symbols-rounded {
    color: var(--md-sys-color-primary);
}

/* --- M3 Cards & Surfaces --- */
.card {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--md-sys-color-outline);
    box-shadow: var(--elevation-1);
    transition: box-shadow var(--transition), transform var(--transition);
}

.card-section {
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.login-card {
    max-width: 32rem;
    margin-right: auto;
    margin-left: auto;
}

.card-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-2xs);
}

.card-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

/* --- Hero Barcode Card --- */
.card-hero {
    padding: var(--space-md) var(--space-xs);
    margin-bottom: var(--space-lg);
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFBFF 100%);
    border: 1.5px solid #DCEDC8;
    box-shadow: var(--elevation-2);
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
    /* [手勢防誤選] 阻斷長按條碼觸發自訂 Action Sheet 時被 iOS Safari 誤判為長按文字反白；搭配 JS contextmenu preventDefault 阻止原生拷貝/查詢氣泡，由卡片內所有子元素自動繼承 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.card-hero-toolbar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    margin-top: var(--space-xs);
    min-height: 36px;
}

.clerk-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--md-sys-color-primary);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center center;
}

.btn-flip {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-full);
    border: 1px solid var(--md-sys-color-outline);
    background-color: #FFFFFF;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--elevation-1);
    flex-shrink: 0;
}

.btn-flip:hover {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
    border-color: var(--md-sys-color-primary);
    box-shadow: var(--elevation-2);
}

.btn-flip .material-symbols-rounded {
    font-size: 17px;
    transition: transform 0.35s ease;
}

.barcode-display-frame {
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.barcode-display-frame.copied {
    transform: scale(0.985);
    opacity: 0.75;
}

.barcode-display-frame img {
    width: 100%;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    border-radius: 4px;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center center;
    pointer-events: none;
}

/* 全螢幕暗色聚焦遮罩 (Spotlight Dimming Backdrop) */
.barcode-flip-backdrop {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 850;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.barcode-flip-backdrop.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Flipped State (面對店員 — 聚焦高亮狀態) */
.card-hero.is-flipped {
    position: relative;
    z-index: 860;
    background: #FFFFFF;
    border-color: #84CC16;
    box-shadow: 0 20px 48px -6px rgba(0, 0, 0, 0.55), 0 8px 18px -4px rgba(0, 0, 0, 0.3);
}

.card-hero.is-flipped .clerk-prompt {
    transform: rotate(180deg);
}

.card-hero.is-flipped .barcode-display-frame img {
    transform: rotate(180deg);
}

.card-hero.is-flipped .btn-flip {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-color: var(--md-sys-color-primary);
}

.card-hero.is-flipped .btn-flip .material-symbols-rounded {
    transform: rotate(180deg);
}

/* Empty Hero */
.card-empty-hero {
    padding: var(--space-md) var(--space-md);
    text-align: center;
    margin-bottom: var(--space-md);
}

.empty-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.empty-icon-wrap .material-symbols-rounded {
    font-size: 32px;
}

.card-empty-hero h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

/* --- Section Headers --- */
.section-header {
    margin-bottom: var(--space-sm);
    /* [手勢防誤選] 阻斷長按條碼觸發自訂 Action Sheet 時被 iOS Safari 誤判為長按文字反白；搭配 JS contextmenu preventDefault 阻止原生拷貝/查詢氣泡，由卡片內所有子元素自動繼承 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    /* [手勢防誤選] 阻斷長按條碼觸發自訂 Action Sheet 時被 iOS Safari 誤判為長按文字反白；搭配 JS contextmenu preventDefault 阻止原生拷貝/查詢氣泡，由卡片內所有子元素自動繼承 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--space-2xs);
}

.page-subtitle {
    font-size: 0.9375rem;
    color: var(--md-sys-color-on-surface-variant);
}

.agent-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--md-sys-color-primary-container) 0%, #E2F3D4 100%);
    color: var(--md-sys-color-on-primary-container);
    border: 1px solid rgba(78, 128, 36, 0.28);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 6px rgba(78, 128, 36, 0.12);
    margin-top: var(--space-2xs);
}

.agent-badge .material-symbols-rounded {
    font-size: 1.125rem;
    color: var(--md-sys-color-primary);
}

/* --- Feature Cards (Action List) --- */
.feature-card-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feature-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--md-sys-color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--md-sys-color-outline);
    box-shadow: var(--elevation-1);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
    /* [手勢防誤選] 阻斷長按條碼觸發自訂 Action Sheet 時被 iOS Safari 誤判為長按文字反白；搭配 JS contextmenu preventDefault 阻止原生拷貝/查詢氣泡，由卡片內所有子元素自動繼承 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.feature-card-button {
    width: 100%;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--elevation-2);
    border-color: var(--md-sys-color-outline-variant);
}

.feature-icon-badge {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon-badge .material-symbols-rounded {
    font-size: 24px;
}

.badge-indigo {
    background-color: var(--badge-indigo-bg);
    color: var(--badge-indigo-fg);
}

.badge-teal {
    background-color: var(--badge-teal-bg);
    color: var(--badge-teal-fg);
}

.badge-amber {
    background-color: var(--badge-amber-bg);
    color: var(--badge-amber-fg);
}

.badge-purple {
    background-color: #F3E8FF;
    color: #7E22CE;
}

.badge-rose {
    background-color: var(--badge-rose-bg);
    color: var(--badge-rose-fg);
}

.feature-content {
    flex: 1;
    min-width: 0;
}

.feature-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 2px;
}

.feature-desc {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.4;
}

.feature-action {
    color: var(--md-sys-color-on-surface-variant);
    transition: transform var(--transition);
}

.feature-card:hover .feature-action {
    transform: translateX(4px);
    color: var(--md-sys-color-primary);
}

/* --- M3 Stepped Form Layout (Draw Barcode) --- */
.step-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.step-badge {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-size: 0.875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step-title-wrap {
    flex: 1;
}

.step-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.step-desc {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 2px;
}

.mono-tag {
    font-family: var(--font-mono);
    background-color: var(--md-sys-color-surface-container-high);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    color: var(--md-sys-color-primary);
}

/* Logo Selection Cards */
.logo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.logo-card {
    position: relative;
    border: 1.5px solid var(--md-sys-color-outline);
    border-radius: var(--radius-md);
    background-color: var(--md-sys-color-surface);
    padding: var(--space-md) var(--space-sm);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-card img {
    width: 52px;
    height: 52px;
    object-fit: contain;
}

.logo-card .no-logo-placeholder {
    width: 52px;
    height: 52px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--md-sys-color-on-surface-variant);
    user-select: none;
}

.logo-card .no-logo-placeholder .material-symbols-rounded {
    font-size: 26px;
    color: var(--md-sys-color-outline);
}

.logo-card .no-logo-placeholder span:last-child {
    font-size: 11px;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
}

.logo-card.selected .no-logo-placeholder .material-symbols-rounded {
    color: var(--md-sys-color-primary);
}

.logo-card .check-icon {
    position: absolute;
    top: 6px;
    right: 6px;
    font-size: 18px;
    color: var(--md-sys-color-primary);
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition);
}

.logo-card:hover {
    border-color: var(--md-sys-color-primary);
    background-color: #FAFBFF;
}

.logo-card.selected {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-primary-container);
    box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

.logo-card.selected .check-icon {
    opacity: 1;
    transform: scale(1);
}

/* File Upload Box */
.file-upload-box {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.file-upload-name {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 280px;
}

/* M3 Input Field */
.m3-input-field {
    width: 100%;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--md-sys-color-surface-container-high);
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    padding: 0 var(--space-md);
    transition: all var(--transition);
}

.input-wrapper:focus-within {
    background-color: #FFFFFF;
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 3px rgba(139, 195, 74, 0.25);
}

.input-wrapper.has-error {
    border-color: var(--md-sys-color-error) !important;
    background-color: #FFF5F5;
}

.input-wrapper.has-error:focus-within {
    border-color: var(--md-sys-color-error) !important;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2) !important;
}

.input-wrapper.has-error .input-leading-icon {
    color: var(--md-sys-color-error);
}


.input-leading-icon {
    color: var(--md-sys-color-on-surface-variant);
    margin-right: var(--space-xs);
}

.password-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
}

.password-toggle:hover,
.password-toggle:focus-visible {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
    outline: none;
}

.password-toggle .material-symbols-rounded {
    font-size: 22px;
}

.m3-text-input {
    flex: 1;
    height: 52px;
    border: none;
    background: transparent;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    outline: none;
    letter-spacing: 0.1em;
}

.m3-text-input::placeholder {
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 400;
    letter-spacing: normal;
}

/* 登入頁瀏覽器自動填入時仍沿用條碼輸入框的表面色與文字色 */
.login-card .m3-text-input:-webkit-autofill,
.login-card .m3-text-input:-webkit-autofill:hover,
.login-card .m3-text-input:-webkit-autofill:focus,
.login-card .m3-text-input:autofill {
    -webkit-box-shadow: 0 0 0 1000px var(--md-sys-color-surface-container-high) inset;
    -webkit-text-fill-color: var(--md-sys-color-on-surface);
    caret-color: var(--md-sys-color-on-surface);
}

/* 日期輸入框微調 (相容 Material 3 字級、字距與原生 Picker) */
input[type="date"].m3-text-input {
    letter-spacing: normal;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
}

input[type="date"].m3-text-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.55;
    transition: opacity var(--transition);
    padding: 4px;
}

input[type="date"].m3-text-input::-webkit-calendar-picker-indicator:hover {
    opacity: 0.95;
}

/* 表單欄位次要輔助提示文字 (Form Hint) */
.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    opacity: 0.8;
    margin-top: 5px;
    padding-left: 4px;
    line-height: 1.4;
}


.login-card .input-wrapper:focus-within .m3-text-input:-webkit-autofill,
.login-card .input-wrapper:focus-within .m3-text-input:autofill {
    -webkit-box-shadow: 0 0 0 1000px #FFFFFF inset;
}

.input-supporting-text {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: 6px;
    padding: 0 4px;
    min-height: 20px;
}

.char-counter {
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
    margin-left: auto;
}

.input-error-msg {
    display: none;
    align-items: center;
    gap: 4px;
    font-size: 0.8125rem;
    color: var(--md-sys-color-error);
}

.input-error-msg.visible {
    display: flex;
}

.input-error-msg .material-symbols-rounded {
    font-size: 16px;
}

/* Barcode Preview Box */
.barcode-preview-box {
    background-color: #FFFFFF;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
}

.barcode-preview-box img {
    width: 100%;
    max-width: 500px;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-xs);
}

/* --- M3 Sliders (Print Page) --- */
.m3-slider-group {
    background-color: var(--md-sys-color-surface-container-high);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xs);
}

.slider-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.slider-badge {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: var(--radius-full);
}

.m3-slider {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-full);
    background: #CBD5E1;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin: var(--space-xs) 0;
}

.m3-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--md-sys-color-primary);
    border: 3px solid #FFFFFF;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.m3-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.m3-slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--md-sys-color-primary);
    border: 3px solid #FFFFFF;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.slider-scale {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    font-family: var(--font-mono);
    padding: 0 2px;
}

.print-preview-frame {
    background-color: #FFFFFF;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    text-align: center;
    transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.print-preview-frame:active,
.print-preview-frame.copied {
    transform: scale(0.985);
    opacity: 0.8;
}

.print-preview-frame img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-xs);
    box-shadow: var(--elevation-1);
}

/* --- About Page Details --- */
.about-content {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--md-sys-color-on-surface);
}

.highlight-quote {
    color: var(--md-sys-color-primary);
    font-weight: 700;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feature-list-item {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
    padding: var(--space-sm);
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-md);
}

.item-icon {
    color: var(--md-sys-color-primary);
    font-size: 22px;
    margin-top: 2px;
}

.pwa-guide-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.pwa-guide-card {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.pwa-guide-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: var(--space-xs);
    color: var(--md-sys-color-on-surface);
}

.pwa-steps {
    padding-left: 1.25rem;
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
}

.license-footer {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.license-img {
    height: 36px;
}

.license-info {
    font-size: 0.8125rem;
    line-height: 1.5;
}

/* --- M3 Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    line-height: 1.4;
}

.btn-primary {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--elevation-1);
}

.btn-primary:hover {
    background-color: #3B6319;
    box-shadow: var(--elevation-2);
}

.btn-tonal {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.btn-tonal:hover {
    background-color: #DCEDC8;
}

.btn-outlined {
    background-color: transparent;
    color: var(--md-sys-color-primary);
    border: 1.5px solid var(--md-sys-color-outline-variant);
}

.btn-outlined:hover {
    background-color: var(--md-sys-color-surface-container-high);
    border-color: var(--md-sys-color-primary);
}

.w-full {
    width: 100%;
}

/* --- Toast (M3 Snackbar) --- */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: var(--md-sys-color-on-surface);
    color: var(--md-sys-color-surface);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    box-shadow: var(--elevation-3);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
    z-index: 300;
    white-space: nowrap;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--md-sys-color-outline);
    background-color: var(--md-sys-color-surface);
    padding: var(--space-md) 0;
    margin-top: auto;
}

.footer-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.footer-github-wrap {
    display: flex;
    align-items: center;
}

.footer-github-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-github-link:hover {
    color: var(--md-sys-color-primary);
}

.footer-github-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.footer-cc-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: #FFFFFF;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--md-sys-color-outline);
    box-shadow: var(--elevation-1);
    text-decoration: none;
    transition: all var(--transition);
    flex-shrink: 0;
}

.footer-cc-pill:hover {
    border-color: #CBD5E1;
    box-shadow: var(--elevation-2);
}

.cc-icons {
    display: flex;
    align-items: center;
    gap: 4px;
}

.cc-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.cc-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--md-sys-color-on-surface);
    transition: color var(--transition);
    white-space: nowrap;
}

.footer-cc-pill:hover .cc-label {
    color: var(--md-sys-color-primary);
}


/* --- Page Transition --- */
.page-section {
    padding: var(--space-lg) 0;
    animation: fadeIn 0.25s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Utility */
.hidden {
    display: none !important;
}

.hidden-input {
    display: none;
}

.text-primary {
    color: var(--md-sys-color-primary);
}

.text-secondary {
    color: var(--md-sys-color-on-surface-variant);
}

.text-danger,
.text-error {
    color: var(--md-sys-color-error);
}

.uppercase {
    text-transform: uppercase;
}


.mt-sm {
    margin-top: var(--space-sm);
}

.mt-md {
    margin-top: var(--space-md);
}

.mt-lg {
    margin-top: var(--space-lg);
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    :root {
        --header-height: 58px;
        --space-md: 1rem;
        --space-lg: 1.5rem;
    }

    .site-nav {
        display: none;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .pwa-guide-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 10px;
    }

    .card-section {
        padding: var(--space-md);
    }

    .card-hero {
        padding: var(--space-sm) 4px;
        border-radius: var(--radius-sm);
    }

    .logo-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }

    .logo-card {
        padding: 8px 4px;
    }

    .logo-card img {
        width: 44px;
        height: 44px;
    }

    .logo-card .check-icon {
        top: 3px;
        right: 3px;
        font-size: 16px;
    }

    .site-footer .footer-cc-pill .cc-label {
        display: none;
    }

    .site-footer .footer-cc-pill {
        padding: 6px 10px;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 18px;
    }

    .card-section {
        padding: var(--space-sm);
    }

    .feature-card {
        padding: var(--space-sm);
        gap: var(--space-sm);
    }
}

/* --- Invoice Scanner --- */
.scan-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.scan-toolbar-actions {
    display: flex;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.scan-viewport {
    position: relative;
    min-height: 280px;
    margin-top: var(--space-md);
    overflow: hidden;
    border-radius: var(--radius-md);
    background: #111827;
}

.scan-viewport video,
.scan-viewport canvas {
    display: block;
    width: 100%;
    height: auto;
}

.scan-viewport .drawingBuffer {
    position: absolute;
    inset: 0;
}

.scan-guide {
    position: absolute;
    z-index: 2;
    border: 2px solid rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    color: #fff;
    background: rgba(17, 24, 39, 0.7);
    font-size: 0.75rem;
    pointer-events: none;
}

.scan-guide-barcode {
    top: 42%;
    left: 4%;
    right: 4%;
    text-align: center;
}

.scan-guide-left {
    bottom: 8%;
    left: 4%;
    width: 43%;
    text-align: center;
}

.scan-guide-right {
    bottom: 8%;
    right: 4%;
    width: 43%;
    text-align: center;
}

.scan-upload-button {
    margin-top: var(--space-sm);
}

.scan-hint {
    margin: var(--space-xs) 0 var(--space-md);
}

/* Invoice Info Grid (key-value 列表) */
.invoice-info-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.invoice-info-row {
    display: flex;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.invoice-info-row:last-child {
    border-bottom: none;
}

.invoice-info-label {
    flex-shrink: 0;
    width: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface-variant);
}

.invoice-info-value {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--md-sys-color-on-surface);
}

.invoice-info-value.invoice-total {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--md-sys-color-primary);
}

/* Invoice Items Table */
.invoice-items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.invoice-items-table thead {
    background: var(--md-sys-color-surface-container);
}

.invoice-items-table th {
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    border-bottom: 2px solid var(--md-sys-color-outline-variant);
}

.invoice-items-table th:nth-child(2),
.invoice-items-table th:nth-child(3) {
    text-align: right;
    width: 70px;
}

.invoice-items-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-on-surface);
}

.invoice-items-table td:nth-child(2),
.invoice-items-table td:nth-child(3) {
    text-align: right;
    white-space: nowrap;
}

.invoice-items-table tbody tr:last-child td {
    border-bottom: none;
}

.invoice-items-table tbody tr:hover {
    background: var(--md-sys-color-surface-container-low);
}

/* Scan Details Toggle (技術資訊收合) */
.scan-details-toggle summary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.scan-details-toggle summary::-webkit-details-marker {
    display: none;
}

.scan-toggle-icon {
    color: var(--md-sys-color-on-surface-variant);
    transition: transform var(--transition);
}

.scan-details-toggle[open] .scan-toggle-icon {
    transform: rotate(180deg);
}

/* Badge Colors */
.badge-amber {
    background: linear-gradient(135deg, #f59e0b33, #f59e0b1a);
    color: #d97706;
}

.badge-gray {
    background: linear-gradient(135deg, #6b728033, #6b72801a);
    color: #6b7280;
}

@media (max-width: 600px) {
    .scan-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .scan-toolbar .btn,
    .scan-toolbar-actions {
        width: 100%;
    }

    .scan-toolbar-actions .btn {
        flex: 1;
        justify-content: center;
    }

    .invoice-info-label {
        width: 80px;
    }

    .invoice-items-table th,
    .invoice-items-table td {
        padding: 8px;
    }
}

/* --- M3 Dialog --- */
.m3-dialog-overlay {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    background-color: rgba(15, 23, 42, 0.42);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.m3-dialog-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.m3-dialog {
    width: min(100%, 28rem);
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--elevation-3);
    transform: translateY(8px) scale(0.98);
    transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.m3-dialog-overlay.visible .m3-dialog {
    transform: translateY(0) scale(1);
}

.m3-dialog-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
}

.m3-dialog-message {
    margin-top: var(--space-sm);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    white-space: pre-line;
}

.m3-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-xs);
    margin-top: var(--space-lg);
}

.m3-dialog-button {
    min-width: 5rem;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-full);
    font: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
}

.m3-dialog-button-cancel {
    background-color: transparent;
    color: var(--md-sys-color-on-surface-variant);
}

.m3-dialog-button-cancel:hover {
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.m3-dialog-button-confirm {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.m3-dialog-button-confirm:hover {
    background-color: #3B6319;
}

.m3-dialog-button-danger {
    background-color: var(--md-sys-color-error);
    color: #FFFFFF;
}

.m3-dialog-button-danger:hover {
    background-color: #B91C1C;
}

@media (max-width: 480px) {
    .m3-dialog {
        padding: var(--space-md);
    }

    .m3-dialog-actions {
        flex-direction: column-reverse;
    }

    .m3-dialog-button {
        width: 100%;
    }
}

/* --- M3 Bottom Sheet / Modal Dialog --- */
.m3-modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.m3-modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.m3-action-sheet {
    background-color: var(--md-sys-color-surface);
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-md) var(--space-md) var(--space-lg);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
    /* [手勢防誤選] 阻斷長按彈出動作面板時面板內的標題與按鈕被系統誤選反白或呼出原生選單 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.m3-modal-overlay.visible .m3-action-sheet {
    transform: translateY(0);
}

.m3-sheet-handle {
    width: 36px;
    height: 4px;
    background-color: var(--md-sys-color-outline-variant);
    border-radius: 2px;
    margin: 0 auto var(--space-md);
}

.m3-sheet-header {
    text-align: center;
    margin-bottom: var(--space-md);
}

.m3-sheet-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
}

.m3-sheet-subtitle {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 2px;
}

.m3-sheet-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.m3-sheet-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--md-sys-color-outline);
    background-color: var(--md-sys-color-surface-container-low);
    color: var(--md-sys-color-on-surface);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition);
}

.m3-sheet-btn:hover,
.m3-sheet-btn:active {
    background-color: var(--md-sys-color-surface-container-high);
    border-color: var(--md-sys-color-primary);
}

.m3-sheet-btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.m3-sheet-btn-content {
    flex: 1;
    min-width: 0;
}

.m3-sheet-btn-label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.m3-sheet-btn-desc {
    display: block;
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 1px;
}

.m3-sheet-cancel-btn {
    margin-top: var(--space-sm);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition);
}

.m3-sheet-cancel-btn:hover {
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

/* --- Barcode Lightbox (全螢幕條碼旋轉 90° 滿版放大) --- */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background-color: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
}

.lightbox-container {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: lightboxFade 0.22s ease-out;
    pointer-events: none;
}

.lightbox-toolbar {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 20;
    pointer-events: auto;
}

.lightbox-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: all var(--transition);
}

.lightbox-btn:hover,
.lightbox-btn:active {
    background: rgba(255, 255, 255, 0.35);
    transform: scale(1.08);
}

.lightbox-btn .material-symbols-rounded {
    font-size: 24px;
}

/* 條碼白底卡片 */
.lightbox-barcode-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.9);
    overflow: hidden;
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

.lightbox-barcode-card img {
    width: 100%;
    height: auto;
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    pointer-events: none;
}

/* 直向螢幕（手機直立）：旋轉 90 度，解除父層寬度限制，完整填滿螢幕高度 */
@media (orientation: portrait) {
    .lightbox-barcode-card {
        position: absolute;
        transform: rotate(90deg);
        transform-origin: center center;
        width: 88vh;
        width: 88dvh;
        min-width: 85vh;
        max-width: 92vh;
        flex-shrink: 0;
    }
}

/* 橫向螢幕（手機橫放 / 桌面）：維持水平，利用螢幕寬度（vw）放大至 92vw */
@media (orientation: landscape) {
    .lightbox-barcode-card {
        transform: none;
        width: 92vw;
        max-width: 1100px;
    }
}

/* --- Scanner Modal (通用全螢幕相機掃描視窗) --- */
.scanner-modal,
#barcodeScannerModal,
#invoiceScannerModal {
    position: fixed;
    inset: 0;
    z-index: 1200;
    background-color: #000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.scanner-modal.visible,
#barcodeScannerModal.visible,
#invoiceScannerModal.visible {
    opacity: 1;
    visibility: visible;
}

.scanner-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0) 100%);
    z-index: 10;
    color: #fff;
}

.scanner-title {
    font-size: 1.125rem;
    font-weight: 500;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

.scanner-close-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: background 0.2s;
}

.scanner-close-btn:active {
    background: rgba(255, 255, 255, 0.3);
}

.scanner-viewport-container {
    position: relative;
    flex: 1;
    width: 100%;
    overflow: hidden;
}

.scanner-viewport-video,
#barcodeQuaggaViewport,
#invoiceQuaggaViewport {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.scanner-viewport-video video,
#barcodeQuaggaViewport video,
#invoiceQuaggaViewport video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanner-viewport-video canvas,
#barcodeQuaggaViewport canvas,
#invoiceQuaggaViewport canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 掃描對準框 (中間挖空，四周半透明) */
.scanner-overlay {
    position: absolute;
    inset: 0;
    z-index: 5;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 使用 box-shadow 製作四周遮罩，中間透明 */
    box-shadow: inset 0 0 0 100vmax rgba(0, 0, 0, 0.5);
}

/* 單條條碼框 (手機條碼) */
.scanner-guide-box {
    width: 80%;
    max-width: 400px;
    height: 120px;
    border: 2px solid var(--md-sys-color-primary);
    border-radius: var(--radius-sm);
    position: relative;
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.5);
    background: transparent;
}

.scanner-guide-box::before,
.scanner-guide-box::after,
.scanner-guide-box .corner-bl,
.scanner-guide-box .corner-br {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: #fff;
    border-style: solid;
}

.scanner-guide-box::before {
    top: -2px;
    left: -2px;
    border-width: 4px 0 0 4px;
    border-top-left-radius: var(--radius-sm);
}

.scanner-guide-box::after {
    top: -2px;
    right: -2px;
    border-width: 4px 4px 0 0;
    border-top-right-radius: var(--radius-sm);
}

.scanner-guide-box .corner-bl {
    bottom: -2px;
    left: -2px;
    border-width: 0 0 4px 4px;
    border-bottom-left-radius: var(--radius-sm);
}

.scanner-guide-box .corner-br {
    bottom: -2px;
    right: -2px;
    border-width: 0 4px 4px 0;
    border-bottom-right-radius: var(--radius-sm);
}

/* 電子發票專屬對準導引框 (極大化聚焦於條碼與雙 QR 區域 — 方案 B 核心區) */
.invoice-guide-frame {
    width: 88%;
    max-width: 360px;
    height: auto;
    border: 2px solid var(--md-sys-color-primary);
    border-radius: var(--radius-md);
    position: relative;
    /* 條碼框外部全面變暗 (深色遮罩) */
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.65);
    background: rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 14px;
    box-sizing: border-box;
    pointer-events: none;
    /* 配合發票實體配置（條碼位於中下半段），將框線下移至畫面中下段 */
    margin-top: 30vh;
}

.invoice-guide-frame::before,
.invoice-guide-frame::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border-color: #fff;
    border-style: solid;
}

.invoice-guide-frame::before {
    top: -2px;
    left: -2px;
    border-width: 4px 0 0 4px;
    border-top-left-radius: var(--radius-md);
}

.invoice-guide-frame::after {
    top: -2px;
    right: -2px;
    border-width: 4px 4px 0 0;
    border-top-right-radius: var(--radius-md);
}

.invoice-guide-barcode {
    width: 100%;
    height: 60px;
    border: 2px dashed rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    /* 條碼取景區保持完全透明無遮罩，確保最高清晰度 */
    background: transparent;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
    transition: all 0.25s ease;
}

.invoice-guide-barcode.scanned {
    border-color: var(--md-sys-color-primary);
    border-style: solid;
    background: rgba(139, 195, 74, 0.35);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 0 12px rgba(139, 195, 74, 0.5);
}

.invoice-guide-qrs {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
}

.invoice-guide-qr {
    flex: 1;
    aspect-ratio: 1 / 1;
    border: 2px dashed rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 600;
    /* QR Code 取景區保持完全透明無遮罩，確保最高清晰度 */
    background: transparent;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
    text-align: center;
    padding: 6px;
    transition: all 0.25s ease;
}

.invoice-guide-qr.scanned {
    border-color: var(--md-sys-color-primary);
    border-style: solid;
    background: rgba(139, 195, 74, 0.35);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 0 12px rgba(139, 195, 74, 0.5);
}

.input-trailing-btn {
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin-right: var(--space-xs);
    transition: color var(--transition);
}

.input-trailing-btn:hover,
.input-trailing-btn:active {
    color: var(--md-sys-color-primary);
}

.scanner-top-hint-wrap {
    position: absolute;
    top: calc(50% - 110px);
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 var(--space-md);
    z-index: 10;
    pointer-events: none;
}

#invoiceScannerModal .scanner-top-hint-wrap {
    top: calc(50vh - 10rem);
}

.scanner-hint {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: #fff;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
    text-align: center;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
    pointer-events: auto;
}

.scanner-hint .material-symbols-rounded {
    font-size: 1.25rem;
    color: #86efac;
}

.scanner-hint-prominent {
    border: 1.5px solid rgba(134, 239, 172, 0.7);
    background: rgba(15, 23, 42, 0.85);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5), 0 0 14px rgba(134, 239, 172, 0.3);
}

.scanner-bottom-actions {
    position: absolute;
    bottom: 24px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 10;
    padding: 0 var(--space-md);
    pointer-events: auto;
}

.btn-scanner-upload {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--radius-full);
}

.btn-scanner-upload:hover,
.btn-scanner-upload:active {
    background: rgba(255, 255, 255, 0.25);
    border-color: #fff;
}

/* 掃描按鈕 (與輸入框並排) */
.m3-input-field .input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.m3-input-field .input-wrapper>input {
    flex: 1;
    min-width: 0;
}

/* 條碼衝突/警告橫幅 (Alert Banner) */
.alert-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    animation: fadeIn 0.3s ease;
}

.alert-warning {
    background-color: #FEF3C7;
    border: 1.5px solid #F59E0B;
    color: #92400E;
}

.alert-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #D97706;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-body {
    flex: 1;
    font-size: 0.875rem;
    line-height: 1.5;
}

.alert-title {
    display: block;
    font-weight: 700;
    font-size: 0.9375rem;
    color: #B45309;
    margin-bottom: 2px;
}

.alert-desc {
    margin: 4px 0;
    color: #78350F;
}

.alert-hint {
    display: block;
    font-size: 0.75rem;
    color: #92400E;
    opacity: 0.9;
    margin-top: 4px;
}

.badge-mismatch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    background-color: #FEE2E2;
    color: #DC2626;
    border: 1px solid #FCA5A5;
    margin-left: 8px;
}

.alert-success {
    background-color: #ECFDF5;
    border: 1.5px solid #10B981;
    color: #065F46;
}

.alert-success .alert-icon-wrap {
    color: #059669;
}

.alert-success .alert-title {
    color: #047857;
}

.alert-success .alert-desc {
    color: #065F46;
}

.alert-info {
    background-color: #EFF6FF;
    border: 1.5px solid #3B82F6;
    color: #1E40AF;
}

.alert-info .alert-icon-wrap {
    color: #2563EB;
}

.alert-info .alert-title {
    color: #1D4ED8;
}

.alert-info .alert-desc {
    color: #1E40AF;
}

.scan-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.scan-status-chip.chip-done {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

.scan-status-chip.chip-pending {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--color-on-surface-variant);
    border: 1px solid rgba(0, 0, 0, 0.1);
    opacity: 0.75;
}

/* ==========================================================================
   代理登入專用樣式 (整合 Material 3 系統)
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 6px;
}

.barcode-result-wrap {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    border: 1.5px dashed var(--md-sys-color-outline-variant);
}

.barcode-text-display {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--md-sys-color-primary);
    letter-spacing: 0.08em;
    user-select: all;
    line-height: 1.3;
}

.barcode-text-display.result-placeholder {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--md-sys-color-on-surface-variant);
    letter-spacing: normal;
    font-style: italic;
}

.alert-error {
    padding: var(--space-sm) var(--space-md);
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.alert-error .material-symbols-rounded {
    font-size: 20px;
    color: var(--md-sys-color-error);
    flex-shrink: 0;
}

.alert-success {
    padding: var(--space-sm) var(--space-md);
    background-color: #D1FAE5;
    color: #065F46;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    border: 1px solid #A7F3D0;
}

.alert-success .material-symbols-rounded {
    font-size: 20px;
    color: #059669;
    flex-shrink: 0;
}

/* 登入表單輔助外部連結 */
.login-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    padding-top: var(--space-sm);
}

.login-helper-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-primary);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
}

.login-helper-link:hover {
    color: var(--md-sys-color-on-primary-container);
    text-decoration: underline;
}

.login-helper-link .ext-icon {
    font-size: 0.875rem;
    opacity: 0.75;
}

.login-links-separator,
.login-link-sep {
    color: var(--md-sys-color-outline-variant);
    font-size: 0.875rem;
    user-select: none;
}


.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==========================================================================
   安全登入與生物辨識相關樣式 (Material 3)
   ========================================================================== */

.quick-auth-avatar {
    width: 68px;
    height: 68px;
    margin: 0 auto var(--space-sm);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--md-sys-color-primary-container) 0%, var(--md-sys-color-surface-container-high) 100%);
    color: var(--md-sys-color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
    transition: transform var(--transition);
}

.quick-auth-avatar .material-symbols-rounded {
    font-size: 38px;
}

.quick-auth-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 4px;
}

.quick-auth-hint {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

.quick-auth-switch {
    border-top: 1px solid var(--md-sys-color-outline-variant);
    padding-top: var(--space-md);
}

.quick-auth-actions-row {
    border-top: 1px solid var(--md-sys-color-outline-variant);
    padding-top: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.btn-text {
    background: transparent;
    border: none;
    padding: 8px 14px;
    color: var(--md-sys-color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background-color var(--transition), color var(--transition);
}

.btn-text:hover {
    background-color: var(--md-sys-color-surface-container-high);
}

.btn-text-danger {
    color: var(--md-sys-color-error);
}

.btn-text-danger:hover {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.login-barcode-section {
    width: 100%;
    margin-bottom: var(--space-lg);
}

.login-barcode-view {
    width: 100%;
}

.login-back-bar {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-sm);
}

/* M3 Choice Dialog (選項式對話框) */
.m3-choice-dialog {
    max-width: 440px;
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.m3-dialog-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto var(--space-sm);
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
}

.m3-dialog-icon .material-symbols-rounded {
    font-size: 28px;
}

.m3-dialog-choices {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.m3-choice-button {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--md-sys-color-on-surface);
}

.m3-choice-button:hover,
.m3-choice-button:focus-visible {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-surface-container-low);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.m3-choice-button.primary {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-surface-container);
}

.m3-choice-button.primary:hover {
    background-color: var(--md-sys-color-primary-container);
}

.m3-choice-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.m3-choice-button.primary .m3-choice-icon {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.m3-choice-icon .material-symbols-rounded {
    font-size: 22px;
}

.m3-choice-content {
    flex: 1;
}

.m3-choice-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.m3-choice-desc {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 2px;
    line-height: 1.4;
}

.text-center {
    text-align: center;
}

/* ==========================================================================
   雲端發票視圖樣式 (Invoices View Styles)
   ========================================================================== */

.invoices-header {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-bottom: var(--space-md);
}

.invoices-header .page-title {
    text-align: center;
}

.invoices-header .back-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    transition: background-color var(--transition);
}

.invoices-header .back-btn:hover {
    background-color: var(--md-sys-color-surface-container-highest);
}

.invoices-title-group {
    flex: 1;
}

/* 期別水平滾動 Chips 選擇器 */
.period-selector-wrapper {
    width: 100%;
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.period-chips-scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 2px;
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE/Edge */
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.period-chips-scroll::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Opera */
}

.period-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition);
    user-select: none;
    flex-shrink: 0;
}

.period-chip:hover {
    background-color: var(--md-sys-color-surface-container-low);
    border-color: var(--md-sys-color-outline);
}

.period-chip.active {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-color: var(--md-sys-color-primary);
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.period-badge-now {
    font-size: 0.6875rem;
    padding: 2px 6px;
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-radius: var(--radius-full);
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* 本期消費總覽統計卡片 */
.invoices-summary-card {
    background: linear-gradient(135deg, var(--md-sys-color-surface-container-high) 0%, var(--md-sys-color-surface-container-low) 100%);
    border: 1px solid var(--md-sys-color-outline-variant);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border-radius: var(--radius-lg);
}

.summary-top-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.summary-icon-badge {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.summary-icon-badge .material-symbols-rounded {
    font-size: 24px;
}

.summary-meta {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.summary-period-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin-bottom: 2px;
}

.summary-lottery-status {
    font-size: 0.8125rem;
    color: var(--md-sys-color-primary);
    font-weight: 600;
    line-height: 1.4;
}

.refresh-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.refresh-btn:hover {
    background-color: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface);
}

.refresh-btn.rotating .material-symbols-rounded {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.summary-stats-grid {
    display: flex;
    align-items: center;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--md-sys-color-outline-variant);
}

.summary-stat-col {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
    margin-bottom: 2px;
}

.stat-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    font-family: var(--font-sans);
    text-align: right;
}

#summaryCount,
#summaryAmount {
    text-align: right;
}

.stat-value.stat-amount {
    color: var(--md-sys-color-primary);
}

.summary-divider {
    width: 1px;
    height: 32px;
    background-color: var(--md-sys-color-outline-variant);
    margin: 0 var(--space-md);
}

/* 發票列表與卡片 */
.invoices-list-container {
    width: 100%;
}

.invoices-real-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.invoice-card {
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition);
}

.invoice-card:hover {
    border-color: var(--md-sys-color-outline);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.inv-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    cursor: pointer;
    user-select: none;
    transition: background-color var(--transition);
}

/* 奇偶卡片標頭間隔交替 (Zebra Striping) — 統一採用 primary-container */
.invoice-card:nth-child(odd) .inv-card-header {
    background-color: var(--md-sys-color-surface);
}

.invoice-card:nth-child(odd) .inv-card-header:hover {
    background-color: var(--md-sys-color-surface-dim);
}

.invoice-card:nth-child(even) .inv-card-header {
    background-color: var(--md-sys-color-primary-container);
}

.invoice-card:nth-child(even) .inv-card-header:hover {
    filter: brightness(0.97);
}

.inv-main-info {
    flex: 1;
    min-width: 0;
    padding-right: var(--space-sm);
}

.inv-seller-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}

.inv-seller-name {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

.inv-meta-row {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
}

.inv-num {
    font-family: var(--font-mono);
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--md-sys-color-on-surface);
}

.inv-dot {
    color: var(--md-sys-color-outline);
}

.inv-date {
    font-family: var(--font-mono);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.inv-amount-col {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.inv-amount-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    font-variant-numeric: tabular-nums;
}

.inv-chevron {
    color: var(--md-sys-color-on-surface-variant);
    transition: transform 0.25s ease;
}

/* 卡片手風琴商品明細 */
.inv-details-accordion {
    padding: 0 var(--space-md) var(--space-md);
    background-color: var(--md-sys-color-surface-container-lowest);
    animation: fadeIn 0.2s ease-out;
}

.inv-details-divider {
    height: 1px;
    background-color: var(--md-sys-color-outline-variant);
    margin-bottom: var(--space-sm);
}

.inv-details-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--space-xs);
}

.inv-carrier-tag {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border: 1px solid rgba(78, 128, 36, 0.25);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: var(--radius-xs);
    line-height: 1.3;
    white-space: nowrap;
}

.inv-details-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.inv-refresh-detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    border-radius: var(--radius-full);
    border: 1px solid var(--md-sys-color-outline-variant);
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    transition: all var(--transition);
}

.inv-refresh-detail-btn:hover {
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
    border-color: var(--md-sys-color-outline);
}

.inv-refresh-detail-btn .material-symbols-rounded {
    font-size: 15px;
}

.inv-refresh-detail-btn.rotating .material-symbols-rounded {
    animation: spin 0.8s linear infinite;
}

.inv-items-list {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.inv-item-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    padding: 6px 8px;
    border-radius: var(--radius-xs);
    transition: background-color var(--transition);
}

/* 購買明細品項奇偶間隔交替 (Zebra Striping) — 統一採用 primary-container */
.inv-item-row:nth-child(odd) {
    background-color: transparent;
}

.inv-item-row:nth-child(even) {
    background-color: var(--md-sys-color-primary-container);
}

.inv-item-desc {
    flex: 1;
    min-width: 0;
    color: var(--md-sys-color-on-surface);
    word-break: break-word;
}

.inv-item-unit {
    font-weight: normal;
    color: var(--md-sys-color-on-surface-variant);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    opacity: 0.85;
    flex-shrink: 0;
}

.inv-item-qty {
    color: var(--md-sys-color-on-surface-variant);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    text-align: right;
    min-width: 2.2rem;
    flex-shrink: 0;
}

.inv-item-subtotal {
    color: var(--md-sys-color-on-surface);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    text-align: right;
    min-width: 3.5rem;
    flex-shrink: 0;
}

.inv-item-subtotal.discount {
    color: #15803D;
}

/* 發票狀態徽章 (Badges) */
.inv-badge {
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: var(--radius-xs);
    line-height: 1.3;
    white-space: nowrap;
}

.inv-badge-void {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.inv-badge-tax {
    background-color: #E0F2FE;
    color: #0369A1;
    border: 1px solid rgba(3, 105, 161, 0.2);
    font-family: var(--font-mono);
}

.inv-badge-donate {
    background-color: #FDF2F8;
    color: #BE185D;
    border: 1px solid rgba(190, 24, 93, 0.2);
}

.inv-amount-voided {
    text-decoration: line-through;
    color: var(--md-sys-color-on-surface-variant);
    opacity: 0.6;
}

/* 發票詳細資訊欄 (Metadata 包含營業人地址、統編、時間、隨機碼) */
.inv-meta-footer {
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px dashed var(--md-sys-color-outline-variant);
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    display: flex;
    flex-direction: column;
    gap: 4px;
    animation: fadeIn 0.2s ease-out;
}

.inv-meta-sub-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-md);
    color: var(--md-sys-color-on-surface-variant);
}

.inv-meta-address-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xs);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.4;
}

.inv-meta-address-content {
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.inv-meta-address-val {
    color: var(--md-sys-color-on-surface);
}

.inv-map-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-xs);
    color: var(--md-sys-color-primary);
    text-decoration: none;
    flex-shrink: 0;
    transition: background-color var(--transition), color var(--transition);
}

.inv-map-link:hover {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.inv-map-link .material-symbols-rounded {
    font-size: 24px;
}

.inv-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.inv-meta-item .font-mono {
    font-family: var(--font-mono);
}

.inv-meta-item.text-warning {
    color: #B45309;
    font-weight: 600;
}

/* 骨架屏 (Skeletons) */
.invoice-skeleton-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.skeleton-card {
    height: 76px;
    border-radius: var(--radius-md);
    background: linear-gradient(90deg,
            var(--md-sys-color-surface-container-low) 25%,
            var(--md-sys-color-surface-container-high) 50%,
            var(--md-sys-color-surface-container-low) 75%);
    background-size: 200% 100%;
    animation: skeletonPulse 1.5s infinite ease-in-out;
}

@keyframes skeletonPulse {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* 空狀態與錯誤狀態 */
.invoices-empty-state,
.invoices-error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background-color: var(--md-sys-color-surface-container-low);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--md-sys-color-outline-variant);
    margin-top: var(--space-sm);
}

.empty-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
}

.empty-icon-wrap .material-symbols-rounded {
    font-size: 32px;
}

.empty-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 var(--space-xs);
}

.empty-desc {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    max-width: 260px;
    margin: 0 0 var(--space-md);
    line-height: 1.5;
}

.empty-action-btn {
    font-size: 0.875rem;
}

/* ==========================================
   全民稽核頁面樣式 (Audit View — Material 3)
   ========================================== */

/* 全民稽核相機掃描容器 */
.audit-scan-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.audit-scan-viewport {
    position: relative;
    width: 100%;
    max-height: 280px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #000000;
    box-shadow: var(--elevation-2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.audit-scan-viewport video {
    width: 100%;
    height: 100%;
    max-height: 280px;
    object-fit: cover;
    display: block;
}

.audit-scan-viewport canvas {
    display: none;
}

.audit-scan-frame {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.audit-scan-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-size: 0.8125rem;
    font-weight: 500;
}

.audit-scan-hint .scan-hint-icon {
    font-size: 20px;
}

.audit-scan-actions {
    display: flex;
    gap: 8px;
}

/* 查核發票表頭資訊網格 (Audit Meta Grid) */
.audit-meta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (max-width: 480px) {
    .audit-meta-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

.audit-meta-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 10px 12px;
    background-color: var(--md-sys-color-surface-dim);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-sm);
}

.audit-meta-item-full {
    grid-column: 1 / -1;
}

.audit-meta-label {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
}

.audit-meta-value {
    font-size: 0.9375rem;
    color: var(--md-sys-color-on-surface);
    font-weight: 600;
    word-break: break-all;
}

.audit-meta-amount {
    font-size: 1.125rem;
    color: var(--md-sys-color-primary);
    font-weight: 700;
}