/* ============================================================
   Bếp Nôm NOM - Vietnamese Street Food & Bubble Tea
   ============================================================ */

/* --- Variables --- */
:root {
    --color-primary: #c0392b;
    --color-primary-dark: #a93226;
    --color-secondary: #e67e22;
    --color-accent: #f39c12;
    --color-dark: #1a1a2e;
    --color-dark-2: #16213e;
    --color-text: #2d3436;
    --color-text-light: #636e72;
    --color-bg: #fffdf7;
    --color-bg-alt: #fef9ef;
    --color-warm: #fdf2e9;
    --color-gold: #d4a017;
    --color-cream: #fff8e7;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

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

.section {
    padding: 80px 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-dark);
    text-align: center;
    margin-bottom: 12px;
}

.section-desc {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.125rem;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 14px 36px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
}
.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);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border-color: #fff;
}
.btn-outline:hover {
    background: #fff;
    color: var(--color-dark);
    transform: translateY(-2px);
}
.btn-secondary {
    background: var(--color-secondary);
    color: #fff;
    border-color: var(--color-secondary);
}
.btn-secondary:hover {
    background: #d35400;
    border-color: #d35400;
    color: #fff;
    transform: translateY(-2px);
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(26, 26, 46, 0.98);
    box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #fff;
}
.logo-icon {
    font-size: 2rem;
}
.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
}

.nav-list {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav-link {
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition);
}
.nav-link:hover,
.nav-link.active {
    color: #fff;
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background: #fff;
    border-radius: 3px;
    transition: var(--transition);
}

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 1;
}
.hero .container {
    position: relative;
    z-index: 2;
}
.hero-content {
    max-width: 720px;
    text-align: center;
    margin: 0 auto;
}
.hero-title {
    font-family: var(--font-heading);
    font-size: 5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.1;
}
.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 20px;
    font-weight: 500;
    letter-spacing: 0.05em;
}
.hero-desc {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 36px;
    line-height: 1.8;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Features --- */
.features {
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid rgba(0,0,0,0.04);
}
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}
.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--color-dark);
}
.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}
.feature-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* --- Story --- */
.story {
    background: var(--color-bg-alt);
}
.story-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.story-content h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: var(--color-dark);
}
.story-content p {
    margin-bottom: 16px;
    color: var(--color-text-light);
    font-size: 1.05rem;
    line-height: 1.8;
}
.story-content .btn {
    margin-top: 16px;
}
.story-image {
    display: flex;
    justify-content: center;
}
.story-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #c0392b, #e67e22, #f39c12);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.story-image-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M20 0v40M0 20h40'/%3E%3C/g%3E%3C/svg%3E");
}
.placeholder-icon {
    font-size: 5rem;
    position: relative;
    z-index: 1;
}
.placeholder-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #fff;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

/* --- Menu Preview --- */
.menu-preview {
    background: var(--color-bg);
}
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
}
.preview-item {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
    border: 1px solid rgba(0,0,0,0.04);
}
.preview-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.preview-image {
    height: 200px;
    background: linear-gradient(135deg, #fdf2e9, #fef9ef);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.preview-emoji {
    font-size: 4rem;
}
.preview-item h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin: 20px 20px 8px;
    color: var(--color-dark);
}
.preview-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin: 0 20px 12px;
    line-height: 1.6;
}
.preview-price {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-size: 0.95rem;
}
.preview-cta {
    text-align: center;
    margin-top: 48px;
}

/* --- Testimonials --- */
.testimonials {
    background: var(--color-warm);
}
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}
.testimonial-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
}
.stars {
    color: var(--color-gold);
    font-size: 1.25rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.testimonial-card p {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}
.testimonial-card cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-dark);
}

/* --- CTA --- */
.cta {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    text-align: center;
    color: #fff;
}
.cta h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.cta p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
}

/* --- Footer --- */
.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}
.footer-brand .logo-icon {
    display: block;
    margin-bottom: 8px;
}
.footer-brand .logo-text {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: #fff;
    margin-bottom: 12px;
    font-weight: 700;
}
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
}
.footer-nav h4,
.footer-contact h4 {
    font-family: var(--font-heading);
    color: #fff;
    margin-bottom: 16px;
    font-size: 1.1rem;
}
.footer-nav ul li {
    margin-bottom: 8px;
}
.footer-nav ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.footer-nav ul li a:hover {
    color: var(--color-accent);
}
.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    line-height: 1.7;
}
.footer-contact a {
    color: var(--color-accent);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

/* ============================================================
   Menu Page
   ============================================================ */
.page-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    padding-top: 100px;
}
.page-hero h1 {
    font-family: var(--font-heading);
    font-size: 4rem;
    color: #fff;
    margin-bottom: 12px;
}
.page-hero p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.8);
}

.menu-section {
    padding: 80px 0;
}
.menu-section:nth-child(even) {
    background: var(--color-bg-alt);
}
.menu-section-content h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-dark);
    margin-bottom: 8px;
    text-align: center;
}
.menu-section-content > p {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 48px;
    font-size: 1.1rem;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.menu-item {
    background: #fff;
    padding: 28px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.04);
}
.menu-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.menu-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
    gap: 16px;
}
.menu-item-header h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-dark);
}
.menu-item-price {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.1rem;
    white-space: nowrap;
}
.menu-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}
.menu-item-badge {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 8px;
}
.menu-note {
    text-align: center;
    margin-top: 32px;
    padding: 20px;
    background: var(--color-warm);
    border-radius: var(--radius-sm);
    color: var(--color-text-light);
    font-size: 0.95rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   Contact Page
   ============================================================ */
.contact-section {
    padding: 80px 0;
    background: var(--color-bg);
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}
.contact-info h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-dark);
    margin-bottom: 16px;
}
.contact-info > p {
    color: var(--color-text-light);
    margin-bottom: 32px;
    font-size: 1.05rem;
    line-height: 1.7;
}
.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}
.contact-item-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    background: var(--color-warm);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.contact-item h4 {
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.contact-item p, .contact-item a {
    color: var(--color-text-light);
    font-size: 0.95rem;
}
.contact-item a:hover {
    color: var(--color-primary);
}
.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}
.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--color-dark);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: var(--color-dark);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--color-bg);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .story-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .story-image {
        order: -1;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    .hero-title {
        font-size: 3rem;
    }
    .hero-subtitle {
        font-size: 1.125rem;
    }
    .hero-desc {
        font-size: 1rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .page-hero h1 {
        font-size: 2.5rem;
    }
    .nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(26, 26, 46, 0.98);
        padding: 24px;
        gap: 16px;
    }
    .nav-list.active {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .menu-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .preview-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    .preview-grid {
        grid-template-columns: 1fr;
    }
    .contact-form {
        padding: 24px;
    }
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}