/* 首頁專用樣式 */

/* 全局設定 */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --text-light: #ffffff;
    --text-dark: #2c3e50;
    --text-muted: #5a6c7d;
    --bg-light: #f8f9fc;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

/* 導航列樣式 */
.navbar {
    transition: all 0.3s ease;
    padding: 1rem 0;
    background-color: rgba(0, 0, 0, 0.3) !important;
    backdrop-filter: blur(10px);
}

.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(15px);
    box-shadow: 0 2px 20px var(--shadow-light);
}

.navbar-scrolled .navbar-brand,
.navbar-scrolled .nav-link {
    color: var(--text-dark) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light) !important;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 主要橫幅區域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.hero-buttons .btn-primary {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-buttons .btn-primary:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(255, 255, 255, 1);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.hero-buttons .btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.8);
    color: var(--text-light);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.hero-buttons .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.9);
    color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 功能特色區域 */
.features-section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.feature-card {
    padding: 2.5rem;
    border-radius: 20px;
    transition: all 0.4s ease;
    height: 100%;
    background: white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.feature-description {
    color: #5a6c7d;
    line-height: 1.7;
    margin-bottom: 0;
    font-size: 1rem;
}

/* 統計數據區域 */
.stats-section {
    background-color: var(--bg-light);
}

.stat-item {
    padding: 1.5rem;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: #5a6c7d;
    font-weight: 600;
}

/* 頁尾 */
.footer {
    background-color: #2c3e50 !important;
}

.footer .text-muted {
    color: #95a5a6 !important;
}

.footer .text-primary {
    color: #ffd700 !important;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .hero-buttons .btn:last-child {
        margin-bottom: 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* 動畫效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: fadeInUp 0.6s ease-out;
}

.stat-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 滾動條樣式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
}

/* 改善可讀性的額外樣式 */
.section-subtitle {
    color: #5a6c7d !important;
    font-weight: 500;
}

/* 確保所有文字都有足夠的對比度 */
.text-muted {
    color: #5a6c7d !important;
}

/* 改善按鈕的可訪問性 */
.btn:focus {
    box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.5) !important;
}

/* 改善連結的可訪問性 */
a:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}