/* ============================================
   style.css — 味觉盛宴 · 现代融合料理
   全栈工程师 · 现代餐饮品牌模板
   ============================================ */

/* ----- 1. CSS变量 + 重置 ----- */
:root {
    --color-primary: #d97706;        /* 琥珀暖 */
    --color-primary-light: #f59e0b;
    --color-primary-dark: #92400e;
    --color-accent: #ea580c;         /* 橘红 */
    --color-bg: #fef9ef;            /* 米白暖 */
    --color-bg-alt: #fff7ed;
    --color-bg-dark: #1c1917;       /* 深炭 */
    --color-text: #292524;
    --color-text-light: #78716c;
    --color-text-inverse: #fafaf9;
    --color-border: #e7e5e4;
    --color-card-bg: #ffffff;
    --color-success: #16a34a;
    --color-error: #dc2626;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(217, 119, 6, 0.1);
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.section-header.light h2,
.section-header.light p { color: var(--color-text-inverse); }
.section-header.light .section-tag {
    background: rgba(250, 250, 249, 0.15);
    color: var(--color-text-inverse);
}

/* ----- 2. 导航栏 ----- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: background 0.3s, box-shadow 0.3s, padding 0.3s;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(28, 25, 23, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.2);
    padding: 0.6rem 0;
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text-inverse);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i { color: var(--color-primary-light); }

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: rgba(250, 250, 249, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
    position: relative;
}

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

.nav-links a:hover,
.nav-links a.active { color: #fff; }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    gap: 5px;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-text-inverse);
    border-radius: 2px;
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ----- 3. Hero 区 ----- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-bg-dark);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(217, 119, 6, 0.15) 0%, transparent 70%),
                linear-gradient(135deg, rgba(28,25,23,0.4) 0%, rgba(28,25,23,0.9) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 6rem 1.5rem 4rem;
}

.hero-text .hero-badge {
    display: inline-block;
    background: rgba(217, 119, 6, 0.2);
    color: var(--color-primary-light);
    padding: 0.4rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(4px);
}

.hero-text h1 {
    font-family: var(--font-display);
    font-size: 4.2rem;
    font-weight: 700;
    color: var(--color-text-inverse);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.1rem;
    color: rgba(250, 250, 249, 0.7);
    max-width: 480px;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(217, 119, 6, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-inverse);
    border-color: rgba(250,250,249,0.4);
}

.btn-outline:hover {
    background: rgba(250,250,249,0.1);
    border-color: var(--color-text-inverse);
    transform: translateY(-2px);
}

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

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
    transition: transform 0.5s;
}

.hero-card:hover { transform: perspective(800px) rotateY(0deg) rotateX(0deg); }

.hero-card img {
    width: 100%;
    height: 440px;
    object-fit: cover;
    display: block;
}

.hero-card-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 1.1rem;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    color: rgba(250,250,249,0.5);
    font-size: 0.8rem;
    animation: floatUp 2s infinite;
}

@keyframes floatUp {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ----- 4. 菜单卡片网格 ----- */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition);
}

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

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 2rem;
}

.menu-card {
    background: var(--color-card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.menu-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.menu-card-img {
    height: 180px;
    overflow: hidden;
}

.menu-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.menu-card:hover .menu-card-img img { transform: scale(1.08); }

.menu-card-body {
    padding: 1.2rem 1.2rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.menu-card-body h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.menu-card-body p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    flex: 1;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.menu-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.menu-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.menu-tag {
    font-size: 0.75rem;
    background: rgba(217, 119, 6, 0.1);
    color: var(--color-primary);
    padding: 0.2rem 0.8rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ----- 5. 特供区 (深色背景) ----- */
.specials-section {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.specials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.special-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all var(--transition);
}

.special-card:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-4px);
    border-color: var(--color-primary-light);
}

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

.special-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.special-card p { color: rgba(250,250,249,0.7); font-size: 0.9rem; }
.special-card .special-price {
    display: inline-block;
    margin-top: 1rem;
    background: var(--color-primary);
    color: #fff;
    padding: 0.3rem 1.2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1.1rem;
}

/* ----- 6. 评价区 ----- */
.reviews-section { background: var(--color-bg-alt); }

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.review-card {
    background: var(--color-card-bg);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border-left: 4px solid var(--color-primary-light);
}

.review-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.review-card .stars {
    color: #f59e0b;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.review-card blockquote {
    font-style: italic;
    color: var(--color-text);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.review-author img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.review-author strong { font-size: 0.95rem; }
.review-author span { font-size: 0.8rem; color: var(--color-text-light); }

/* ----- 7. 预约表单 ----- */
.reservation-section { background: var(--color-bg); }

.reservation-wrapper {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 3rem;
    align-items: start;
}

.reservation-form {
    background: var(--color-card-bg);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    color: var(--color-text);
}

.form-group label i {
    color: var(--color-primary);
    margin-right: 0.3rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: #fff;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

.form-group .error-msg {
    font-size: 0.8rem;
    color: var(--color-error);
    margin-top: 0.3rem;
    display: block;
    height: 1rem;
}

.form-group input.error,
.form-group select.error {
    border-color: var(--color-error);
}

.reservation-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: var(--color-card-bg);
    padding: 1.8rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.info-card i {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.info-card h4 { font-weight: 600; margin-bottom: 0.3rem; }
.info-card p { color: var(--color-text-light); font-size: 0.9rem; }
.info-card a { color: var(--color-primary); font-weight: 500; }

/* ----- 8. Footer ----- */
.footer {
    background: var(--color-bg-dark);
    color: rgba(250,250,249,0.8);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 3rem;
    padding-bottom: 2rem;
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: #fff;
    margin-bottom: 0.8rem;
}

.footer-brand h3 i { color: var(--color-primary-light); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; }

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.2rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: rgba(250,250,249,0.7);
    transition: all var(--transition);
    font-size: 1.2rem;
}

.social-links a:hover {
    background: var(--color-primary);
    color: #fff;
}

.footer-links h4,
.footer-newsletter h4 {
    color: #fff;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links ul li { margin-bottom: 0.5rem; }
.footer-links ul li a {
    color: rgba(250,250,249,0.6);
    transition: color var(--transition);
}
.footer-links ul li a:hover { color: var(--color-primary-light); }

.newsletter-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.8rem;
}

.newsletter-form input {
    flex: 1;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-full);
    border: none;
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.newsletter-form input::placeholder { color: rgba(250,250,249,0.4); }
.newsletter-form input:focus { outline: 2px solid var(--color-primary); }

.newsletter-form button {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--color-primary);
    color: #fff;
    font-size: 1.1rem;
    transition: background var(--transition);
}

.newsletter-form button:hover { background: var(--color-primary-dark); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(250,250,249,0.4);
}

/* ----- 9. 回到顶部 ----- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    border: none;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ----- 10. 成功提示弹窗 (Toast) ----- */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

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

.toast i { font-size: 1.3rem; }
.toast.success i { color: var(--color-success); }
.toast.error i { color: var(--color-error); }

/* ============================================
   响应式设计
   ============================================ */

/* 平板 (≤ 1024px) */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
    .hero-text p { margin: 0 auto 2rem; }
    .hero-actions { justify-content: center; }
    .hero-card { max-width: 400px; margin: 0 auto; }
    .hero-text h1 { font-size: 3.2rem; }
    .reservation-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 手机 (≤ 768px) */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(28,25,23,0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right 0.4s;
        box-shadow: -8px 0 30px rgba(0,0,0,0.3);
        align-items: flex-start;
    }
    .nav-links.open { right: 0; }
    .hamburger { display: flex; }

    .hero-text h1 { font-size: 2.6rem; }
    .hero-card img { height: 300px; }
    .hero-card { max-width: 100%; }

    .section-header h2 { font-size: 2rem; }
    .menu-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
    .specials-grid { grid-template-columns: 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }

    .form-row { grid-template-columns: 1fr; }
    .reservation-form { padding: 1.5rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }

    .back-to-top { bottom: 1rem; right: 1rem; width: 42px; height: 42px; }
}

/* 小手机 (≤ 480px) */
@media (max-width: 480px) {
    .hero-text h1 { font-size: 2rem; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .btn { justify-content: center; }
    .container { padding: 0 1rem; }
    .section { padding: 3rem 0; }
}