/* ============================================
   LANDING PAGE — BẾP NHÀ MÌNH
   Phong cách: Tối giản & Sang trọng
   ============================================

   HƯỚNG DẪN CHỈNH SỬA NHANH:
   ─────────────────────────────
   Đổi màu chính?     → Sửa --color-gold
   Đổi font?          → Sửa --font và link Google Fonts trong HTML
   Đổi khoảng cách?   → Sửa --space-section
   Đổi bo góc nút?    → Sửa --radius

   TÊN CLASS QUY ƯỚC:
   ─────────────────────────────
   Tên section:   .hero, .features, .menu, .reviews, .contact, .footer
   Container:     .hero-container, .features-container, ...
   Card:          .feature-card, .menu-card, .review-card
   Phần tử con:   .feature-icon, .feature-title, .feature-text
   Trạng thái:    .open, .active, .visible, .menu-card-featured
   ============================================ */


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   BIẾN MÀU SẮC & KÍCH THƯỚC
   Chỉ cần sửa ở đây — toàn trang tự thay đổi
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
    /* --- Màu sắc --- */
    --color-black:       #1A1A1A;    /* Đen sang — tiêu đề, nút chính      */
    --color-gold:        #C5975B;    /* Vàng đồng — điểm nhấn, tag, giá    */
    --color-gold-dark:   #A67C45;    /* Vàng đậm — hover                   */
    --color-gold-light:  #F5EDE3;    /* Vàng nhạt — nền badge              */
    --color-text:        #333333;    /* Xám đậm — nội dung chính           */
    --color-text-light:  #777777;    /* Xám trung — mô tả phụ             */
    --color-bg:          #FAFAFA;    /* Nền chính — xám rất nhạt           */
    --color-bg-warm:     #F5F0EB;    /* Nền ấm — hero, xen kẽ             */
    --color-white:       #FFFFFF;    /* Trắng — card, section              */
    --color-border:      #E8E8E8;    /* Viền — đường kẻ mảnh              */

    /* --- Kích thước & khoảng cách --- */
    --max-width:         1140px;     /* Chiều rộng tối đa container        */
    --space-section:     100px;      /* Khoảng cách trên/dưới mỗi section  */
    --space-header:      56px;       /* Khoảng cách tiêu đề → nội dung     */
    --radius:            4px;        /* Bo góc nút & card — vuông nhẹ      */

    /* --- Font & chuyển động --- */
    --font:              'Inter', -apple-system, 'Segoe UI', sans-serif;
    --transition:        0.35s ease; /* Tốc độ hover — chậm = sang trọng   */
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESET & NỀN TẢNG
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* Nút "Bỏ qua đến nội dung" — chỉ hiện khi nhấn Tab (hỗ trợ người dùng bàn phím) */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 9999;
    padding: 12px 24px;
    background: var(--color-black);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
}
.skip-to-content:focus {
    top: 12px;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CÁC CLASS DÙNG CHUNG
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* --- Tiêu đề section --- */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-header);
}

.section-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2.5px;
    color: var(--color-gold);
    border: 1.5px solid var(--color-gold);
    padding: 6px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.section-text {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.7;
}

.gold { color: var(--color-gold); }

/* --- Nút bấm --- */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    padding: 14px 32px;
    border: 1.5px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.button-sm   { font-size: 13px; padding: 10px 22px; }
.button-full { width: 100%; }

.button-primary {
    background: var(--color-black);
    color: #fff;
    border-color: var(--color-black);
}
.button-primary:hover {
    background: var(--color-gold);
    border-color: var(--color-gold);
}

.button-outline {
    background: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}
.button-outline:hover {
    background: var(--color-black);
    color: #fff;
}

/* --- Hiệu ứng xuất hiện --- */
.animate {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate.visible {
    opacity: 1;
    transform: translateY(0);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   THANH ĐIỀU HƯỚNG (Navigation)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.nav-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 36px;
}

.nav-link {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-light);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.nav-link:hover { color: var(--color-black); }
.nav-link[aria-current="page"] {
    color: var(--color-black);
    font-weight: 600;
}

.nav-cta {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: var(--color-black);
    padding: 10px 24px;
    border-radius: var(--radius);
    transition: var(--transition);
}
.nav-cta:hover { background: var(--color-gold); }

/* Nút CTA trong menu mobile — ẩn trên desktop */
.nav-menu-cta { display: none; }

/* Nút hamburger — ẩn trên desktop */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-black);
    transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   HERO SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.hero {
    padding: 140px 0 var(--space-section);
    background: var(--color-bg-warm);
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* Tag khuyến mãi */
.hero-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-gold-dark);
    background: var(--color-gold-light);
    padding: 8px 20px;
    border-radius: var(--radius);
    margin-bottom: 28px;
}

/* Tiêu đề chính */
.hero-title {
    font-size: clamp(34px, 5vw, 52px);
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.12;
    letter-spacing: -1px;
    margin-bottom: 24px;
}
.hero-title-accent {
    color: var(--color-gold);
}

/* Mô tả */
.hero-text {
    font-size: 17px;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 480px;
}

/* 2 nút CTA */
.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

/* 3 số liệu */
.hero-stats {
    display: flex;
    gap: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.hero-stat { display: flex; flex-direction: column; }

.hero-stat-number {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.5px;
}

.hero-stat-label {
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: 2px;
}

/* Ảnh hero */
.hero-image-placeholder {
    background: linear-gradient(145deg, #EDE7E0, #E5DDD5);
    aspect-ratio: 4/3;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-text-light);
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.hero-image-placeholder span { font-size: 48px; opacity: 0.5; }
.hero-image-placeholder small { font-size: 12px; opacity: 0.6; }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   TÍNH NĂNG (Features)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.features {
    padding: var(--space-section) 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.features-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
}

.feature-card {
    background: var(--color-white);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
}
.feature-card:hover {
    background: var(--color-bg-warm);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 20px;
    opacity: 0.8;
}

.feature-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 10px;
    letter-spacing: 0.2px;
}

.feature-text {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.7;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   THỰC ĐƠN (Menu)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.menu {
    padding: var(--space-section) 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.menu-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

/* Card sản phẩm */
.menu-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}
.menu-card:hover {
    border-color: var(--color-gold);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

/* Card nổi bật — viền vàng đồng */
.menu-card-featured {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 1px var(--color-gold);
}

/* Ảnh sản phẩm */
.menu-card-image {
    position: relative;
    overflow: hidden;
}

.menu-card-placeholder {
    aspect-ratio: 16/10;
    background: linear-gradient(145deg, #EDE7E0, #E5DDD5);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--color-text-light);
    text-align: center;
    line-height: 1.5;
}

/* Badge góc trái */
.menu-card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 5px 14px;
    border-radius: var(--radius);
    background: var(--color-black);
    color: #fff;
    z-index: 2;
}
.menu-card-badge-gold {
    background: var(--color-gold);
}

/* Nội dung card */
.menu-card-body { padding: 24px; }

.menu-card-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.menu-card-desc {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.menu-card-price { display: flex; flex-direction: column; }

.price-old {
    font-size: 13px;
    color: var(--color-text-light);
    text-decoration: line-through;
}

.price-new {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-gold-dark);
    letter-spacing: -0.5px;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ĐÁNH GIÁ (Reviews)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.reviews {
    padding: var(--space-section) 0;
    background: var(--color-bg-warm);
    border-top: 1px solid var(--color-border);
}

.reviews-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.review-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}
.review-card:hover {
    border-color: var(--color-gold);
}

.review-stars {
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 20px;
}

.review-text {
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-gold-light);
    color: var(--color-gold-dark);
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.review-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-black);
}

.review-info {
    font-size: 12px;
    color: var(--color-text-light);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   LIÊN HỆ (Contact)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.contact {
    padding: var(--space-section) 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.contact-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

/* --- Form --- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-black);
    letter-spacing: 0.3px;
}

.form-input {
    font-family: var(--font);
    font-size: 15px;
    color: var(--color-text);
    padding: 14px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    transition: var(--transition);
    outline: none;
}
.form-input:focus {
    border-color: var(--color-gold);
    background: var(--color-white);
}

.form-input::placeholder {
    color: #BBBBBB;
}

.form-textarea { resize: vertical; min-height: 100px; }

.form-note {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: 4px;
}
.form-note a { color: var(--color-gold-dark); }
.form-note a:hover { text-decoration: underline; }

/* --- Thông tin liên hệ --- */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item-icon {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.5;
}

.contact-item a { color: var(--color-gold-dark); }
.contact-item a:hover { text-decoration: underline; }

/* Bản đồ placeholder */
.contact-map-placeholder {
    background: var(--color-bg);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    font-size: 14px;
    color: var(--color-text-light);
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}
.contact-map-placeholder small { font-size: 12px; opacity: 0.6; }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   FOOTER (Chân trang)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.footer {
    background: var(--color-black);
    color: rgba(255,255,255,0.5);
    padding: 72px 0 0;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-logo {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    display: block;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
}

.footer-heading {
    color: rgba(255,255,255,0.9);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.footer-link {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,0.4);
    padding: 4px 0;
}
.footer-link:hover { color: var(--color-gold); }

.footer-contact {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 4px;
}
.footer-contact a { color: rgba(255,255,255,0.6); }
.footer-contact a:hover { color: var(--color-gold); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 24px 0;
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.5px;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   NÚT NỔI (Floating Buttons)
   Luôn hiện góc phải — gọi điện + Zalo
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.floating-buttons {
    position: fixed;
    bottom: 28px;
    right: 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    transition: var(--transition);
}
.floating-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.floating-btn-phone { background: var(--color-black); }
.floating-btn-zalo  { background: #0068FF; }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   FAQ — CÂU HỎI THƯỜNG GẶP
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.faq {
    padding: var(--space-section) 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.faq-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 24px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}
.faq-item:first-child {
    border-top: 1px solid var(--color-border);
}
.faq-item[open] {
    background: var(--color-white);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 22px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
    cursor: pointer;
    list-style: none;
    line-height: 1.4;
    letter-spacing: -0.2px;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { color: var(--color-gold-dark); }

.faq-icon {
    flex-shrink: 0;
    font-size: 20px;
    font-weight: 300;
    color: var(--color-text-light);
    margin-left: 16px;
    transition: var(--transition);
}
.faq-item[open] .faq-icon {
    transform: rotate(45deg);
    color: var(--color-gold);
}

.faq-answer {
    padding: 0 0 24px;
}
.faq-answer p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.8;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESPONSIVE — TABLET (≤ 1024px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 1024px) {
    :root { --space-section: 80px; }

    /* Hero: 1 cột */
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-image { max-width: 520px; margin: 0 auto; }

    /* Tính năng: 2 cột */
    .features-grid { grid-template-columns: repeat(2, 1fr); }

    /* Thực đơn: 2 cột → card cuối căn giữa */
    .menu-grid { grid-template-columns: repeat(2, 1fr); }
    .menu-grid .menu-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        margin: 0 auto;
    }

    /* Đánh giá: 2 cột */
    .reviews-grid { grid-template-columns: 1fr 1fr; }
    .reviews-grid .review-card:last-child {
        grid-column: 1 / -1;
        max-width: 440px;
        margin: 0 auto;
    }

    /* Liên hệ: 1 cột */
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }

    /* Footer: 2 cột */
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESPONSIVE — MOBILE (≤ 768px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 768px) {
    :root { --space-section: 64px; --space-header: 36px; }

    /* --- Nav mobile: hamburger menu --- */
    .nav-menu {
        display: none;
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 20px 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    }
    .nav-menu.open { display: flex; }
    .nav-link {
        padding: 14px 0;
        font-size: 14px;
        border-bottom: 1px solid var(--color-border);
        text-transform: none;
        letter-spacing: 0;
    }
    .nav-cta { display: none; }
    .nav-menu-cta {
        display: block;
        text-align: center;
        padding: 14px 24px;
        margin-top: 8px;
        background: var(--color-black);
        color: #fff;
        border-radius: var(--radius);
        font-size: 14px;
        font-weight: 600;
    }
    .nav-menu-cta:hover { background: var(--color-gold); }
    .nav-toggle { display: flex; }

    /* Hero */
    .hero { padding: 110px 0 64px; }
    .hero-stats { gap: 24px; }
    .hero-stat-number { font-size: 22px; }

    /* Tính năng: 1 cột */
    .features-grid {
        grid-template-columns: 1fr;
        background: transparent;
        border: none;
        gap: 16px;
    }
    .feature-card {
        border: 1px solid var(--color-border);
        border-radius: var(--radius);
        text-align: left;
        display: grid;
        grid-template-columns: auto 1fr;
        gap: 0 20px;
        padding: 24px;
    }
    .feature-icon {
        grid-row: 1 / 3;
        margin-bottom: 0;
        font-size: 28px;
        align-self: center;
    }
    .feature-title { margin-bottom: 4px; }

    /* Thực đơn: 1 cột */
    .menu-grid { grid-template-columns: 1fr; }
    .menu-grid .menu-card:last-child { max-width: none; }

    /* Đánh giá: 1 cột */
    .reviews-grid { grid-template-columns: 1fr; }
    .reviews-grid .review-card:last-child { max-width: none; }

    /* Footer: 1 cột */
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESPONSIVE — MOBILE NHỎ (≤ 480px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 480px) {
    .hero-title { font-size: 30px; }

    .hero-buttons {
        flex-direction: column;
    }
    .hero-buttons .button { width: 100%; }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    .hero-stat {
        flex-direction: row;
        gap: 10px;
        align-items: baseline;
    }
}