/* ==================== 基础样式 ==================== */
:root {
    --primary-color: #8B4513;
    --primary-light: #D2691E;
    --primary-dark: #5D3A1A;
    --gold-color: #DAA520;
    --bg-color: #FFFAF0;
    --bg-light: #FFF8DC;
    --text-color: #333;
    --text-light: #666;
    --border-color: #DEB887;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Serif SC', 'SimSun', 'STSong', serif;
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-light) 100%);
    color: var(--text-color);
    line-height: 1.8;
    min-height: 100vh;
}

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

/* ==================== 头部导航 ==================== */
.header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lotus {
    font-size: 2rem;
    color: var(--gold-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    padding: 5px 15px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.nav a:hover,
.nav a.active {
    background: rgba(255,255,255,0.2);
}

/* ==================== 英雄区 ==================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::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 0 100 100"><text y="50" font-size="80" opacity="0.05">卍</text></svg>');
    background-size: 100px;
    opacity: 0.3;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 5px;
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.search-box {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    background: rgba(255,255,255,0.95);
    outline: none;
}

.search-box button {
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    background: var(--gold-color);
    color: var(--primary-dark);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-box button:hover {
    background: #FFD700;
    transform: translateY(-2px);
}

/* ==================== 佛经目录 ==================== */
.sutras-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gold-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

.sutra-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.sutra-category {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.sutra-category h4 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gold-color);
}

.sutra-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sutra-card {
    display: flex;
    flex-direction: column;
    padding: 15px;
    background: var(--bg-light);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    border-left: 4px solid var(--gold-color);
}

.sutra-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
    background: white;
}

.sutra-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.sutra-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ==================== 特色功能 ==================== */
.features {
    padding: 60px 0;
    background: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    background: var(--bg-light);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-item h4 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.feature-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ==================== 关于 ==================== */
.about {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-color) 100%);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.notice {
    color: var(--text-light);
    font-size: 0.9rem !important;
    padding: 15px;
    background: rgba(139, 69, 19, 0.05);
    border-radius: 10px;
    margin: 20px 0;
}

.merit {
    margin-top: 30px;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border: 2px solid var(--gold-color);
}

.merit p {
    color: var(--primary-color);
    font-weight: 600;
    margin: 8px 0;
    font-size: 1.1rem;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 30px 0;
    text-align: center;
}

.footer p {
    margin: 5px 0;
}

.footer .small {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ==================== 经文页面样式 ==================== */
.sutra-page {
    padding: 40px 0;
}

.sutra-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.sutra-header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.sutra-header .subtitle {
    color: var(--text-light);
    font-size: 1rem;
}

.sutra-content {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    line-height: 2.2;
}

.sutra-content h2 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin: 30px 0 20px;
    padding-left: 15px;
    border-left: 4px solid var(--gold-color);
}

.sutra-content h3 {
    color: var(--primary-light);
    font-size: 1.2rem;
    margin: 25px 0 15px;
}

.sutra-content p {
    margin-bottom: 15px;
    text-indent: 2em;
    text-align: justify;
}

.sutra-content .highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.sutra-content .mantra {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
    border: 1px solid var(--border-color);
}

.sutra-content .mantra p {
    text-indent: 0;
    font-weight: 600;
    color: var(--primary-color);
}

.sutra-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.sutra-nav a {
    color: var(--primary-color);
    text-decoration: none;
    padding: 10px 20px;
    background: var(--bg-light);
    border-radius: 25px;
    transition: all 0.3s ease;
}

.sutra-nav a:hover {
    background: var(--primary-color);
    color: white;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        gap: 15px;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .search-box {
        flex-direction: column;
    }

    .sutra-grid {
        grid-template-columns: 1fr;
    }

    .sutra-content {
        padding: 15px;
        font-size: 16px;
    }

    .sutra-content h2 {
        font-size: 1.1rem;
    }

    .sutra-content h3 {
        font-size: 1rem;
    }

    .sutra-header h1 {
        font-size: 1.4rem;
    }

    .sutra-content .mantra {
        padding: 12px;
    }

    .sutra-nav {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }

    .sutra-nav a {
        text-align: center;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 超小屏幕适配 ==================== */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .header {
        padding: 10px 0;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .nav {
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav a {
        font-size: 0.85rem;
        padding: 4px 10px;
    }

    .hero {
        padding: 40px 0;
    }

    .hero h2 {
        font-size: 1.3rem;
        letter-spacing: 2px;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .sutra-page {
        padding: 20px 0;
    }

    .sutra-content {
        padding: 12px;
        font-size: 15px;
        border-radius: 10px;
        line-height: 2;
    }

    .sutra-content h2 {
        font-size: 1rem;
        margin: 20px 0 15px;
        padding-left: 10px;
    }

    .sutra-content h3 {
        font-size: 0.95rem;
        margin: 18px 0 12px;
    }

    .sutra-content p {
        margin-bottom: 12px;
        text-indent: 2em;
    }

    .sutra-header h1 {
        font-size: 1.2rem;
    }

    .sutra-header .subtitle {
        font-size: 0.9rem;
    }

    .sutra-content .mantra {
        padding: 10px;
        margin: 15px 0;
    }

    .sutra-content .mantra p {
        font-size: 0.95rem;
    }

    .sutra-nav {
        margin-top: 30px;
        padding-top: 20px;
    }

    .sutra-nav a {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .sutra-category {
        padding: 15px;
    }

    .sutra-card {
        padding: 12px;
    }

    .sutra-name {
        font-size: 1rem;
    }

    .sutra-desc {
        font-size: 0.85rem;
    }

    .feature-item {
        padding: 20px;
    }

    .feature-icon {
        font-size: 2rem;
    }

    .merit {
        padding: 15px;
    }

    .merit p {
        font-size: 1rem;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .header,
    .hero,
    .footer,
    .sutra-nav {
        display: none;
    }

    .sutra-content {
        box-shadow: none;
        padding: 0;
    }
}