/* 基础变量 */
:root {
    --color-primary: #e67e22;
    --color-primary-dark: #d35400;
    --color-secondary: #2c3e50;
    --color-accent: #f39c12;
    --color-bg: #fffaf5;
    --color-surface: #ffffff;
    --color-text: #2c3e50;
    --color-text-light: #5d6d7e;
    --color-muted: #95a5a6;
    --color-border: #f0e6dc;
    --color-card-bg: #fffbf7;
    --shadow-sm: 0 2px 8px rgba(44, 62, 80, 0.06);
    --shadow-md: 0 8px 24px rgba(44, 62, 80, 0.08);
    --shadow-lg: 0 16px 48px rgba(44, 62, 80, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-display: 'Noto Serif SC', serif;
    --font-body: 'Noto Sans SC', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    background: rgba(255, 250, 245, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* Hero */
.hero {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, #fffaf5 0%, #fff0e4 100%);
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(230, 126, 34, 0.1);
    color: var(--color-primary-dark);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 56px);
    line-height: 1.25;
    color: var(--color-secondary);
    margin-bottom: 24px;
}

.hero p {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 500px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(230, 126, 34, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 126, 34, 0.35);
}

.btn-secondary {
    background: white;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-card-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.hero-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: rotate(2deg);
    transition: var(--transition);
}

.hero-card:hover {
    transform: rotate(0deg) translateY(-8px);
}

.hero-card-image {
    height: 260px;
    background: linear-gradient(135deg, #ffe8d6 0%, #ffd4b8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
}

.hero-card-body {
    padding: 24px;
}

.hero-card-tag {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 10px;
}

.hero-card-body h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 8px;
}

.hero-card-body p {
    font-size: 14px;
    color: var(--color-text-light);
    margin: 0;
}

/* 统计栏 */
.stats-bar {
    padding: 40px 0;
    background: var(--color-secondary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

/* 食谱区 */
.recipes-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-tag {
    display: inline-block;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 36px;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--color-text-light);
    max-width: 500px;
    margin: 0 auto;
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid var(--color-border);
    background: white;
    color: var(--color-text-light);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.recipes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.recipe-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.recipe-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.recipe-card.hidden {
    display: none;
}

.recipe-image {
    height: 180px;
    background: var(--color-card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 72px;
}

.recipe-content {
    padding: 22px;
}

.recipe-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.recipe-category {
    background: rgba(230, 126, 34, 0.1);
    color: var(--color-primary-dark);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.recipe-time {
    font-size: 13px;
    color: var(--color-muted);
}

.recipe-content h3 {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 10px;
}

.recipe-content p {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 18px;
    line-height: 1.6;
}

.recipe-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.recipe-date {
    font-size: 13px;
    color: var(--color-muted);
}

.recipe-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.recipe-link:hover {
    color: var(--color-primary-dark);
}

/* 关于 */
.about-section {
    padding: 80px 0;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.about-avatar {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffe8d6 0%, #ffd4b8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    box-shadow: var(--shadow-md);
    margin: 0 auto;
}

.about-content h2 {
    font-family: var(--font-display);
    font-size: 36px;
    margin: 14px 0 24px;
}

.about-content p {
    color: var(--color-text-light);
    margin-bottom: 18px;
    font-size: 16px;
}

.about-social {
    display: flex;
    gap: 16px;
    margin-top: 28px;
}

.about-social a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.about-social a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

/* 订阅 */
.newsletter-section {
    padding: 80px 0;
}

.newsletter-box {
    background: var(--color-secondary);
    border-radius: var(--radius-lg);
    padding: 60px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    color: white;
}

.newsletter-content h2 {
    font-family: var(--font-display);
    font-size: 32px;
    margin-bottom: 12px;
}

.newsletter-content p {
    color: rgba(255,255,255,0.75);
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 20px;
    border-radius: 50px;
    border: none;
    font-size: 15px;
    font-family: var(--font-body);
    outline: none;
}

.newsletter-form input:focus {
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.4);
}

.newsletter-form .btn {
    white-space: nowrap;
}

/* 页脚 */
.site-footer {
    background: #1a252f;
    color: white;
    padding: 60px 0 24px;
}

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

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
}

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--color-accent);
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 13px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(120px);
    background: var(--color-secondary);
    color: white;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 14px;
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 200;
    box-shadow: var(--shadow-md);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
    .recipes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-content,
    .about-grid,
    .newsletter-box {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 50px 0;
    }

    .hero-card {
        transform: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 16px;
    }

    .about-avatar {
        width: 200px;
        height: 200px;
        font-size: 80px;
    }

    .newsletter-box {
        padding: 36px;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form .btn {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
}


/* 食谱详情页专属样式 */
.recipe-hero {
    padding: 50px 0 40px;
    background: linear-gradient(135deg, #fffaf5 0%, #fff0e4 100%);
}

.back-link {
    display: inline-block;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 24px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(-4px);
}

.recipe-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.recipe-hero-image {
    height: 320px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #ffe8d6 0%, #ffd4b8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 140px;
    box-shadow: var(--shadow-md);
}

.recipe-hero-content h1 {
    font-family: var(--font-display);
    font-size: 42px;
    margin: 16px 0 20px;
}

.recipe-hero-content p {
    color: var(--color-text-light);
    font-size: 18px;
    margin-bottom: 24px;
}

.recipe-category-tag {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
}

.recipe-meta-bar {
    display: flex;
    gap: 24px;
    color: var(--color-text-light);
    font-size: 15px;
}

.recipe-detail {
    padding: 60px 0 80px;
}

.recipe-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 40px;
    align-items: start;
}

.ingredients-card,
.steps-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.ingredients-card h2,
.steps-card h2 {
    font-family: var(--font-display);
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--color-secondary);
}

.ingredients-card ul {
    list-style: none;
}

.ingredients-card li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--color-border);
    color: var(--color-text-light);
    font-size: 15px;
}

.ingredients-card li:last-child {
    border-bottom: none;
}

.steps-card ol {
    list-style: none;
    counter-reset: step;
}

.step-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    margin-top: 2px;
}

.step-item p {
    color: var(--color-text-light);
    line-height: 1.8;
    flex: 1;
}

.chef-tip {
    margin-top: 32px;
    padding: 20px;
    background: rgba(243, 156, 18, 0.08);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-sm);
}

.chef-tip strong {
    display: block;
    margin-bottom: 8px;
    color: var(--color-secondary);
}

.chef-tip p {
    color: var(--color-text-light);
    margin: 0;
}

@media (max-width: 768px) {
    .recipe-hero-grid,
    .recipe-detail-grid {
        grid-template-columns: 1fr;
    }

    .recipe-hero-image {
        height: 240px;
        font-size: 100px;
    }

    .recipe-hero-content h1 {
        font-size: 32px;
    }
}