/* ============================================
   新竹市數位學習網 - 專業教育科技設計系統 2025
   Professional EdTech Design System v2.0
   ============================================ */

/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
    /* 主色調 - 教育科技風格 (更現代的漸層) */
    --primary-color: #0066CC;
    --primary-dark: #004C99;
    --primary-light: #3399FF;
    --primary-gradient: linear-gradient(135deg, #0066CC 0%, #00A3E0 100%);
    --primary-gradient-vibrant: linear-gradient(135deg, #0ea5e9 0%, #6366f1 50%, #8b5cf6 100%);
    
    /* 輔助色調 */
    --secondary-color: #6366F1;
    --secondary-dark: #4F46E5;
    --secondary-light: #A5B4FC;
    --secondary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    
    /* 強調色 - 活力橘/綠 */
    --accent-color: #F97316;
    --accent-dark: #EA580C;
    --accent-light: #FDBA74;
    --accent-gradient: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
    --accent-green: #10B981;
    --accent-green-gradient: linear-gradient(135deg, #10B981 0%, #34D399 100%);
    
    /* 成功/警告/錯誤 */
    --success-color: #10B981;
    --success-light: #D1FAE5;
    --success-gradient: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --warning-color: #F59E0B;
    --warning-light: #FEF3C7;
    --warning-gradient: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    --error-color: #EF4444;
    --error-light: #FEE2E2;
    --error-gradient: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
    --info-color: #3B82F6;
    --info-light: #DBEAFE;
    --info-gradient: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    
    /* 中性色調 */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-dark: #0F172A;
    --bg-gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    --bg-gradient-hero-vibrant: linear-gradient(135deg, #1e3a5f 0%, #0d1b2a 50%, #1a365d 100%);
    --bg-gradient-card: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    --bg-mesh: radial-gradient(at 40% 20%, rgba(14, 165, 233, 0.15) 0px, transparent 50%),
               radial-gradient(at 80% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
               radial-gradient(at 0% 50%, rgba(16, 185, 129, 0.1) 0px, transparent 50%),
               radial-gradient(at 80% 50%, rgba(249, 115, 22, 0.08) 0px, transparent 50%),
               radial-gradient(at 0% 100%, rgba(139, 92, 246, 0.1) 0px, transparent 50%);
    
    /* 文字色 */
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-muted: #94A3B8;
    --text-inverse: #FFFFFF;
    
    /* 陰影 - 更柔和的陰影效果 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 20px rgba(0, 102, 204, 0.3);
    --shadow-glow-primary: 0 0 40px rgba(14, 165, 233, 0.25);
    --shadow-glow-secondary: 0 0 40px rgba(99, 102, 241, 0.25);
    --shadow-glow-success: 0 0 40px rgba(16, 185, 129, 0.25);
    --shadow-card-hover: 0 20px 40px -15px rgba(0, 102, 204, 0.2);
    --shadow-card-float: 0 25px 50px -20px rgba(0, 0, 0, 0.15);
    
    /* 圓角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* 間距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;
    
    /* 字體 */
    --font-sans: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'LXGW WenKai TC', 'Noto Sans TC', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* 字體大小 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* 動畫 */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-spring: 600ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --transition-smooth: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===== 基礎重置與全局樣式 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

/* ===== 排版系統 ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

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

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

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

/* ===== 容器系統 ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: 960px;
}

.container-wide {
    max-width: 1440px;
}

/* ===== 卡片系統 ===== */
.edu-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    transition: all var(--transition-slow);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.edu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.edu-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.edu-card:hover::before {
    opacity: 1;
}

.edu-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-100);
}

.edu-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1.25rem;
}

.edu-card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.edu-card-body {
    color: var(--text-secondary);
}

.edu-card-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* 卡片變體 */
.edu-card--primary {
    border-top: 4px solid var(--primary-color);
}

.edu-card--success {
    border-top: 4px solid var(--success-color);
}

.edu-card--warning {
    border-top: 4px solid var(--warning-color);
}

.edu-card--info {
    border-top: 4px solid var(--info-color);
}

.edu-card--glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

/* ===== 按鈕系統 ===== */
.edu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.edu-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.3);
}

.edu-btn--primary {
    background: var(--primary-gradient);
    color: white;
}

.edu-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    color: white;
}

.edu-btn--secondary {
    background: var(--gray-100);
    color: var(--text-primary);
}

.edu-btn--secondary:hover {
    background: var(--gray-200);
}

.edu-btn--outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.edu-btn--outline:hover {
    background: var(--primary-color);
    color: white;
}

.edu-btn--ghost {
    background: transparent;
    color: var(--primary-color);
}

.edu-btn--ghost:hover {
    background: var(--gray-100);
}

.edu-btn--success {
    background: var(--success-color);
    color: white;
}

.edu-btn--danger {
    background: var(--error-color);
    color: white;
}

.edu-btn--sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-xs);
}

.edu-btn--lg {
    padding: 1rem 2rem;
    font-size: var(--text-base);
}

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

/* ===== 表單元件 ===== */
.edu-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.edu-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.edu-input-group {
    display: flex;
    gap: 0;
}

.edu-input-group .edu-input {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    border-right: none;
}

.edu-input-group .edu-btn {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.edu-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.edu-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.edu-form-group {
    margin-bottom: var(--spacing-lg);
}

/* ===== 徽章系統 ===== */
.edu-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.25rem 0.75rem;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

.edu-badge--danger {
    background: var(--error-light);
    color: var(--error-color);
}

/* ===== 進度條 ===== */
.edu-progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.edu-progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-slower);
}

.edu-progress--success .edu-progress-bar {
    background: linear-gradient(90deg, #10B981 0%, #34D399 100%);
}

.edu-progress--warning .edu-progress-bar {
    background: linear-gradient(90deg, #F59E0B 0%, #FBBF24 100%);
}

/* ===== 區段標題 ===== */
.edu-section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.edu-section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: var(--info-light);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.edu-section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.edu-section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Hero 區段 ===== */
.edu-hero {
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #1e3a5f 0%, #0d1b2a 100%);
    overflow: hidden;
}

.edu-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.edu-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.edu-hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.edu-hero-subtitle {
    font-size: var(--text-xl);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ===== 網格系統 ===== */
.edu-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.edu-grid--2 { grid-template-columns: repeat(2, 1fr); }
.edu-grid--3 { grid-template-columns: repeat(3, 1fr); }
.edu-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .edu-grid--4 { grid-template-columns: repeat(2, 1fr); }
    .edu-grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .edu-grid--2,
    .edu-grid--3,
    .edu-grid--4 { grid-template-columns: 1fr; }
}

/* ===== 統計卡片 ===== */
.edu-stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: all var(--transition-slow);
}

.edu-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.edu-stat-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    color: white;
    font-size: 1.5rem;
}

.edu-stat-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.edu-stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== 時間軸 ===== */
.edu-timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.edu-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.edu-timeline-item {
    position: relative;
    padding-bottom: var(--spacing-xl);
}

.edu-timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 5px);
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

.edu-timeline-date {
    font-size: var(--text-sm);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.edu-timeline-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.edu-timeline-content {
    color: var(--text-secondary);
}

/* ===== 分頁 ===== */
.edu-pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xl);
}

.edu-pagination-item {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-base);
    cursor: pointer;
}

.edu-pagination-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.edu-pagination-item.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

.edu-pagination-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.edu-alert-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.edu-alert--info {
    background: var(--info-light);
    border: 1px solid var(--info-color);
    color: var(--primary-dark);
}

.edu-alert--success {
    background: var(--success-light);
    border: 1px solid var(--success-color);
    color: #065F46;
}

.edu-alert--warning {
    background: var(--warning-light);
    border: 1px solid var(--warning-color);
    color: #92400E;
}

.edu-alert--danger {
    background: var(--error-light);
    border: 1px solid var(--error-color);
    color: #991B1B;
}

/* ===== 載入動畫 ===== */
.edu-loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: edu-spin 1s linear infinite;
}

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

/* ===== 骨架屏 ===== */
.edu-skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: edu-skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes edu-skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== 工具類 ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--error-color) !important; }
.text-muted { color: var(--text-muted) !important; }

.bg-primary { background: var(--primary-gradient) !important; }
.bg-light { background: var(--bg-secondary) !important; }
.bg-white { background: var(--bg-primary) !important; }

.rounded { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

.shadow { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-sm) !important; }
.mb-2 { margin-bottom: var(--spacing-md) !important; }
.mb-3 { margin-bottom: var(--spacing-lg) !important; }
.mb-4 { margin-bottom: var(--spacing-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-sm) !important; }
.mt-2 { margin-top: var(--spacing-md) !important; }
.mt-3 { margin-top: var(--spacing-lg) !important; }
.mt-4 { margin-top: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-sm) !important; }
.p-2 { padding: var(--spacing-md) !important; }
.p-3 { padding: var(--spacing-lg) !important; }
.p-4 { padding: var(--spacing-xl) !important; }

.flex { display: flex !important; }
.flex-col { flex-direction: column !important; }
.items-center { align-items: center !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.gap-1 { gap: var(--spacing-sm) !important; }
.gap-2 { gap: var(--spacing-md) !important; }
.gap-3 { gap: var(--spacing-lg) !important; }

.hidden { display: none !important; }
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

/* ===== 動畫效果 ===== */
.animate-fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

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

.animate-scale-in {
    animation: scaleIn var(--transition-slow) ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

/* ===== 響應式隱藏 ===== */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}

/* ===== 列印樣式 ===== */
@media print {
    .no-print { display: none !important; }
    
    body {
        background: white;
        color: black;
    }
    
    .edu-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ============================================
   進階元件與動畫效果
   ============================================ */

/* ===== 漸層文字效果 ===== */
.text-gradient {
    background: var(--primary-gradient-vibrant);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-gold {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 玻璃擬態效果 ===== */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.glass-card-dark {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

/* ===== 3D 卡片翻轉效果 ===== */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-xl);
}

.flip-card-back {
    transform: rotateY(180deg);
}

/* ===== 浮動動畫 ===== */
.float-animation {
    animation: floatUpDown 3s ease-in-out infinite;
}

@keyframes floatUpDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float-animation-slow {
    animation: floatUpDown 5s ease-in-out infinite;
}

/* ===== 脈衝動畫 ===== */
.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

/* ===== 閃爍光暈 ===== */
.glow-animation {
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(14, 165, 233, 0.3); }
    50% { box-shadow: 0 0 40px rgba(14, 165, 233, 0.6); }
}

/* ===== 漸層邊框 ===== */
.gradient-border {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--primary-gradient-vibrant);
    border-radius: calc(var(--radius-xl) + 2px);
    z-index: -1;
}

/* ===== 粒子背景效果 ===== */
.particle-bg {
    position: relative;
    overflow: hidden;
}

.particle-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* ===== 網格背景 ===== */
.grid-bg {
    background-image: 
        linear-gradient(rgba(0, 102, 204, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 204, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ===== 點狀背景 ===== */
.dots-bg {
    background-image: radial-gradient(circle, rgba(0, 102, 204, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* ===== 專業標籤樣式 ===== */
.pro-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.pro-tag--primary {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%);
    color: #0284c7;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

.pro-tag--success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.15) 100%);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.pro-tag--warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(251, 191, 36, 0.15) 100%);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.pro-tag--new {
    background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    color: white;
    border: none;
    animation: pulse 2s ease-in-out infinite;
}

/* ===== 數字動畫計數器 ===== */
.counter-value {
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* ===== 專業圖示容器 ===== */
.icon-box {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    font-size: 1.5rem;
    transition: all var(--transition-slow);
}

.icon-box--primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.25);
}

.icon-box--secondary {
    background: var(--secondary-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
}

.icon-box--success {
    background: var(--success-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25);
}

.icon-box--warning {
    background: var(--warning-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.25);
}

.icon-box--outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.icon-box--lg {
    width: 80px;
    height: 80px;
    font-size: 2rem;
}

.icon-box--sm {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
}

/* ===== 功能卡片 ===== */
.feature-card {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: all var(--transition-slow);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 0 0 4px 4px;
    opacity: 0;
    transition: all var(--transition-slow);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-float);
    border-color: transparent;
}

.feature-card:hover::before {
    opacity: 1;
    width: 100%;
}

.feature-card .icon-box {
    margin: 0 auto 1.5rem;
}

.feature-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: 1.6;
    margin: 0;
}

/* ===== 資訊卡片（帶圖示） ===== */
.info-card {
    display: flex;
    gap: 1.25rem;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-slow);
}

.info-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

.info-card .icon-box {
    flex-shrink: 0;
}

.info-card-content h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.info-card-content p {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin: 0;
    line-height: 1.6;
}

/* ===== 步驟指示器 ===== */
.steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 2rem;
}

.steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    height: 2px;
    background: var(--gray-200);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-200);
    border-radius: 50%;
    font-weight: 700;
    color: var(--text-tertiary);
    margin-bottom: 0.75rem;
    transition: all var(--transition-base);
}

.step.active .step-number,
.step.completed .step-number {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.step-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-tertiary);
}

.step.active .step-label {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== 數據展示卡片 ===== */
.data-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.data-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--primary-gradient);
    opacity: 0.05;
    border-radius: 0 0 0 100%;
}

.data-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.data-card-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-card-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.data-card-change {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--text-sm);
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
}

.data-card-change.positive {
    background: var(--success-light);
    color: var(--success-color);
}

.data-card-change.negative {
    background: var(--error-light);
    color: var(--error-color);
}

/* ===== 互動式列表 ===== */
.interactive-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.interactive-list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    cursor: pointer;
    transition: all var(--transition-base);
}

.interactive-list-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.interactive-list-item .icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--primary-color);
    transition: all var(--transition-base);
}

.interactive-list-item:hover .icon {
    background: var(--primary-gradient);
    color: white;
}

.interactive-list-item .content {
    flex: 1;
}

.interactive-list-item .title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.125rem;
}

.interactive-list-item .subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.interactive-list-item .arrow {
    color: var(--gray-400);
    transition: all var(--transition-base);
}

.interactive-list-item:hover .arrow {
    color: var(--primary-color);
    transform: translateX(4px);
}

/* ===== 響應式網格工具 ===== */
.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.grid-auto-fill {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* ===== 分隔線樣式 ===== */
.divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--spacing-xl) 0;
}

.divider-gradient {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    margin: var(--spacing-xl) 0;
}

.divider-dashed {
    border-top: 2px dashed var(--gray-200);
    margin: var(--spacing-xl) 0;
}

/* ===== 工具提示 ===== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 0.5rem 0.75rem;
    background: var(--gray-900);
    color: white;
    font-size: var(--text-xs);
    font-weight: 500;
    white-space: nowrap;
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* ===== Scroll Progress Bar ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--primary-gradient-vibrant);
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ===== 回到頂部按鈕 ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-slow);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-glow-primary);
}