/* ===================================
   專業簡潔設計 - 基於參考設計
   =================================== */

:root {
    /* 配色系統 - 基於截圖 */
    --primary-red: #E60012;      /* 主要紅色 */
    --primary-dark: #B71C1C;     /* 深紅色 */
    --text-dark: #333333;        /* 深色文字 */
    --text-gray: #666666;        /* 灰色文字 */
    --text-light: #999999;       /* 淺灰文字 */
    --bg-white: #FFFFFF;         /* 白色背景 */
    --bg-light: #F8F8F8;         /* 淺灰背景 */
    --bg-dark: #2D2D2D;          /* 深色背景 */
    --border-color: #E5E5E5;     /* 邊框色 */
    
    /* 字體系統 */
    --font-primary: 'Noto Sans HK', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* 基礎重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 導航欄 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-red);
}

.nav-cta {
    background: var(--primary-red);
    color: white;
    padding: 10px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Hero 區域 */
.hero {
    padding-top: 140px;
    padding-bottom: 80px;
    background: var(--bg-white);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
    margin-bottom: 30px;
    letter-spacing: -1px;
}

.hero-line {
    position: relative;
    color: var(--text-dark);
    display: inline-block;
}

.hero-line::before {
    content: '';
    position: absolute;
    left: -40px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 3px;
    background: var(--primary-red);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 50px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-red);
    color: white;
    border-color: var(--primary-red);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: white;
    color: var(--primary-red);
    border-color: var(--primary-red);
}

.btn-outline:hover {
    background: var(--primary-red);
    color: white;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-white {
    background: white;
    color: var(--primary-red);
    border-color: white;
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

/* 特色區域 */
.features {
    padding: 80px 0;
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    text-align: center;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: #FFF0F0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 40px;
    color: var(--primary-red);
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.feature-desc {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    max-width: 300px;
}

/* 關於區域 */
.about {
    padding: 80px 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.about-features {
    list-style: none;
    margin-bottom: 40px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--text-dark);
}

.about-features i {
    color: var(--primary-red);
    font-size: 20px;
}

.about-image {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 統計區域 */
.stats {
    padding: 60px 0;
    background: var(--primary-red);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 18px;
    opacity: 0.9;
}

/* 課程區域 */
.courses {
    padding: 80px 0;
    background: white;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.course-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.course-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.course-icon {
    width: 80px;
    height: 80px;
    background: #FFF0F0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--primary-red);
}

.course-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.course-price {
    font-size: 16px;
    color: var(--primary-red);
    margin-bottom: 25px;
    font-weight: 500;
}

.course-features {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}

.course-features li {
    padding: 10px 0;
    color: var(--text-gray);
    font-size: 15px;
    position: relative;
    padding-left: 25px;
}

.course-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-red);
    font-weight: 600;
}

/* 導師區域 */
.instructors {
    padding: 80px 0;
    background: var(--bg-light);
}

.instructors-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.instructor-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.instructor-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.instructor-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 3px solid var(--primary-red);
}

.instructor-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-name {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.instructor-title {
    font-size: 14px;
    color: var(--primary-red);
    margin-bottom: 15px;
}

.instructor-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 25px;
}

.view-all-instructors {
    text-align: center;
}

/* CTA 區域 */
.cta {
    padding: 80px 0;
    background: var(--primary-red);
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta .btn {
    background: white;
    color: var(--primary-red);
    border-color: white;
}

.cta .btn:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.footer-about p {
    color: #cccccc;
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-red);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: #cccccc;
}

.footer-contact i {
    color: var(--primary-red);
    width: 20px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid #444444;
    text-align: center;
    color: #999999;
}

/* 手機菜單按鈕 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
}

/* WhatsApp 浮動按鈕 */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 100;
    transition: all 0.3s ease;
    text-decoration: none;
}

.whatsapp-float:hover {
    background: #20BA5A;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.whatsapp-float i {
    color: white;
}

/* 響應式設計 */
@media (max-width: 1024px) {
    .features-grid,
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    /* 導航欄 */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 30px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    /* Hero */
    .hero {
        padding-top: 100px;
        padding-bottom: 60px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-line::before {
        display: none;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    /* 網格布局 */
    .features-grid,
    .courses-grid,
    .instructors-preview {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    /* 統計數字 */
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    /* 區塊標題 */
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-contact {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    /* CTA按鈕 */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* WhatsApp按鈕 */
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
}