/**
 * 訂便當 SaaS - 設計系統
 * 玻璃擬態風格 + 深色/淺色主題
 */

/* ========================================
   CSS Variables - 設計令牌
   ======================================== */
:root {
    /* 主色調 */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.1);

    /* 輔助色 */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* 淺色主題 */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: rgba(0, 0, 0, 0.08);

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* 間距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* 圓角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* 字體 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* 動畫 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* 深色主題 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.08);

    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   Typography
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.125rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Flex */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* ========================================
   Glass Card
   ======================================== */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* ========================================
   Form Elements
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: var(--spacing-xs);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

/* ========================================
   Tables
   ======================================== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:hover {
    background: var(--primary-light);
}

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

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--primary), #ec4899);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.navbar-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--primary);
}

/* ========================================
   Sidebar
   ======================================== */
.layout-sidebar {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-nav {
    list-style: none;
}

.sidebar-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.sidebar-link.active {
    background: var(--primary);
    color: white;
}

@media (max-width: 992px) {
    .layout-sidebar {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--info);
}

/* ========================================
   Loading
   ======================================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ========================================
   Upload Zone
   ======================================== */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-zone-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.upload-zone-text {
    color: var(--text-secondary);
}

.upload-zone-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.empty-state-title {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   Utilities
   ======================================== */
.text-center {
    text-align: center;
}

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

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

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-muted {
    color: var(--text-muted);
}

.text-sm {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

.font-bold {
    font-weight: 600;
}

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

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

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.p-md {
    padding: var(--spacing-md);
}

.p-lg {
    padding: var(--spacing-lg);
}

.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

.hidden {
    display: none !important;
}

.visible {
    visibility: visible;
}

.invisible {
    visibility: hidden;
}

.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.rounded {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-full {
    border-radius: var(--radius-full);
}

.shadow {
    box-shadow: var(--glass-shadow);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.slide-up {
    animation: slideUp var(--transition-normal) ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ========================================
   Ordering System Layout
   ======================================== */

/* 活動選擇卡片 (Stage 1) */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.event-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid var(--border-color);
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
}

.event-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    background: white;
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.1);
}

.event-card .event-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
}

/* 點餐介面 (Stage 2) */
.ordering-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 1100px) {
    .ordering-layout {
        grid-template-columns: 1fr;
    }

    .sticky-cart {
        position: static !important;
        margin-top: var(--spacing-lg);
    }
}

.menu-column {
    min-width: 0;
}

.menu-items-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 800px) {
    .menu-items-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 品項卡片專業化 V4 */
.menu-item {
    display: flex;
    align-items: flex-start;
    padding: 1.25rem;
    background: white;
    border-radius: 12px;
    margin-bottom: 0.75rem;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    position: relative;
    gap: 1rem;
    min-height: 80px;
}

.menu-item:hover {
    border-color: #a5b4fc;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.12);
}

.menu-item.edit-mode {
    background: #f8fafc;
    border: 2px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.menu-item.edit-mode:hover {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* 拖動手把美化 */
.drag-handle {
    cursor: grab;
    padding: 0.5rem 0.25rem;
    color: #9ca3af;
    font-size: 1.1rem;
    user-select: none;
    border-radius: 6px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
}

.drag-handle:hover {
    background: #f3f4f6;
    color: var(--primary);
}

.drag-handle:active {
    cursor: grabbing;
    background: #e0e7ff;
}

.sortable-ghost {
    opacity: 0.4;
    background: #eef2ff !important;
    border: 2px dashed var(--primary) !important;
}

.sortable-chosen {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

/* 品項內容區 */
.menu-item-content {
    flex: 1;
    min-width: 0;
}

.menu-item-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.35rem;
    line-height: 1.4;
}

.menu-item-price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
}

/* 編輯模式輸入框 */
.menu-item .form-input,
.menu-item .form-select {
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
    border-radius: 8px;
}

.menu-item .form-input:focus,
.menu-item .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* 操作按鈕區 */
.menu-item-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.menu-item-actions .btn {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 1rem;
}

/* 置頂操作列 */
.sticky-actions {
    position: sticky;
    top: 0;
    z-index: 100;
    margin: 0 -1.5rem 1.5rem -1.5rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* 分類標題樣式 */
.category-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    margin: 2rem 0 1rem 0;
    font-weight: 700;
    font-size: 1rem;
    color: #475569;
    border-left: 4px solid var(--primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-header:first-child {
    margin-top: 0;
}

/* 類別拖動樣式 */
.category-drag-handle:hover {
    color: var(--primary);
    background: #f3f4f6;
    border-radius: 4px;
}

.category-ghost {
    opacity: 0.5;
    background: #eef2ff !important;
}

.category-ghost .category-header {
    border: 2px dashed var(--primary);
}

.category-chosen {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 上傳區升級 */
.upload-zone-v3 {
    border: 2px dashed var(--border-color);
    padding: 3rem 2rem;
    text-align: center;
    border-radius: var(--radius-xl);
    cursor: pointer;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    transition: all 0.3s;
}

.upload-zone-v3:hover {
    border-color: var(--primary);
    background: white;
    box-shadow: var(--glass-shadow);
}

.upload-zone-v3.dragover {
    border-color: var(--success);
    background: var(--primary-light);
}

/* 骨架屏效果 */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--border-color) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite linear;
    border-radius: var(--radius-sm);
}

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

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

.quantity-btn:not(:disabled):hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.quantity-btn:not(:disabled):active {
    transform: scale(0.9);
}

.quantity-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quantity-input {
    width: 45px;
    text-align: center;
    border: none;
    background: transparent;
    font-weight: 700;
    font-size: 1.1rem;
    -moz-appearance: textfield;
    appearance: none;
}

.quantity-input::-webkit-outer-spin-button,
.quantity-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Sticky Cart 專業化 */
.sticky-cart {
    position: sticky;
    top: 100px;
    z-index: 10;
}

.checkout-card {
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 140px);
    border: 2px solid var(--primary-light);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
}

.cart-items-scroll {
    overflow-y: auto;
    flex: 1;
    margin: var(--spacing-md) 0;
    padding-right: var(--spacing-sm);
}

.cart-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px dashed var(--border-color);
}

/* 用餐時間與截止倒數 */
.event-info-strip {
    background: linear-gradient(to right, var(--primary-light), white);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1.25rem 2rem;
    box-shadow: var(--glass-shadow);
}

.time-badge {
    background: var(--bg-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--glass-shadow);
}


/* 店家切換分頁 (Tabs) */
.store-tabs {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-lg);
    scrollbar-width: none;
    /* Hide scrollbar Firefox */
}

.store-tabs::-webkit-scrollbar {
    display: none;
    /* Hide scrollbar Chrome/Safari */
}

.store-tab {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    white-space: nowrap;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-normal);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.store-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.store-tab.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 分類導航標籤 (Chips) */
.category-nav {
    display: flex !important;
    flex-wrap: nowrap;
    gap: 0.75rem;
    overflow-x: auto;
    padding: 0.75rem 0;
    margin-bottom: var(--spacing-md);
    position: sticky;
    top: 70px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 5;
    -webkit-overflow-scrolling: touch;
}

.category-chip {
    padding: 0.4rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-chip:hover {
    background: var(--primary-light);
    color: var(--primary);
}


.store-content {
    display: none;
}

.store-content.active {
    display: block;
    animation: fadeIn var(--transition-normal) ease-out;
}