/* 樂明數學網站主要樣式 */

/* 重置和基礎設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 色彩配置 */
    --primary-bg: #ffffff;
    --section-bg: #f8f9fa;
    --accent-color: #4285f4;
    --success-color: #34a853;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border-radius: 8px;
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Google Sans', 'Noto Sans TC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--primary-bg);
    overflow-x: hidden;
}

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

/* 導航欄 */
.navbar {
    background: var(--primary-bg);
    box-shadow: var(--shadow-light);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '📐';
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-success {
    background-color: var(--success-color);
    color: white;
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

.btn-success:hover {
    background-color: #2d8f47;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

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

/* 卡片樣式 */
.card {
    background: var(--primary-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    padding: 2rem;
    transition: var(--transition);
}

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

/* 網格佈局 */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* 區塊樣式 */
.section {
    padding: 4rem 0;
}

.section-bg {
    background-color: var(--section-bg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero 區塊 */
.hero {
    padding: 8rem 0 4rem;
    text-align: center;
    background: linear-gradient(135deg, var(--section-bg) 0%, #e8f0fe 100%);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin: 2rem auto;
    display: block;
    box-shadow: var(--shadow-medium);
}

/* 特色區塊 */
.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: white;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
}

.feature-description {
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.6;
}

/* 服務卡片 */
.service-card {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
}

.service-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.service-features {
    list-style: none;
    margin-bottom: 2rem;
}

.service-features li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: block;
        background: none;
        border: none;
        font-size: 1.5rem;
        cursor: pointer;
        color: var(--accent-color);
    }
    
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* 載入動畫 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 頁腳 */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #ccc;
}