/* CSS Variables */
:root {
    /* Colors - Vietnamese/Asian theme with warm tones */
    --primary-color: #c41e3a;
    --primary-dark: #8b0000;
    --secondary-color: #d4a574;
    --accent-color: #ff6b6b;
    --success-color: #4ecdc4;
    --background: #ffffff;
    --background-light: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --overlay: rgba(0,0,0,0.6);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Georgia', 'Times New Roman', serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

/* Container */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navigation */
.navigation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--background);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-base);
}

.navigation.scrolled {
    box-shadow: var(--shadow-md);
}

.navigation__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.navigation__brand {
    display: flex;
    flex-direction: column;
}

.navigation__title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
}

.navigation__subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.navigation__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.navigation__link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: var(--transition-fast);
}

.navigation__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.navigation__link:hover::after,
.navigation__link.active::after {
    width: 100%;
}

.navigation__toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.navigation__toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

.navigation__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.navigation__toggle.active span:nth-child(2) {
    opacity: 0;
}

.navigation__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero__image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    animation: zoomIn 20s infinite alternate;
}

@keyframes zoomIn {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(196,30,58,0.8), rgba(212,165,116,0.6));
}

.hero__content {
    text-align: center;
    color: white;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero__subtitle {
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero__info {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero__rating,
.hero__price {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.price-indicator {
    font-size: 1.2rem;
    font-weight: bold;
}

.hero__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn--primary {
    background: var(--primary-color);
    color: white;
}

.btn--primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn--secondary:hover {
    background: white;
    color: var(--primary-color);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--background-light);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    text-align: center;
}

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

.feature-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-card__title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card__text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.specialties-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.specialties-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.specialties-list li::before {
    content: '🍜';
    position: absolute;
    left: 0;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--secondary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

/* Gallery Section */
.gallery {
    padding: var(--spacing-xxl) 0;
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.gallery__item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition-base);
}

.gallery__item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.gallery__item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition-base);
}

.gallery__item:hover img {
    transform: scale(1.1);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox__image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
    position: absolute;
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: var(--spacing-md);
    transition: var(--transition-fast);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
    transform: scale(1.2);
}

.lightbox__close {
    top: 20px;
    right: 40px;
}

.lightbox__prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox__next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* Reviews Section */
.reviews {
    padding: var(--spacing-xxl) 0;
    background: var(--background-light);
}

.reviews__summary {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.reviews__average {
    text-align: center;
    border-right: 1px solid var(--border-color);
    padding-right: var(--spacing-xl);
}

.reviews__score {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
}

.reviews__count {
    color: var(--text-secondary);
}

.reviews__distribution {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    justify-content: center;
}

.distribution__item {
    display: grid;
    grid-template-columns: 40px 1fr 30px;
    gap: var(--spacing-md);
    align-items: center;
}

.distribution__label {
    font-size: 0.875rem;
}

.distribution__bar {
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.distribution__fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 1s ease;
}

.distribution__count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Rating Stars */
.rating-stars {
    position: relative;
    display: inline-block;
    font-size: 1.2rem;
}

.rating-stars::before {
    content: '☆☆☆☆☆';
    color: var(--border-color);
}

.rating-stars .stars::before {
    content: '★★★★★';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--secondary-color);
    overflow: hidden;
    width: var(--rating);
}

.rating-stars[data-rating="5"] .stars::before { width: 100%; }
.rating-stars[data-rating="4.5"] .stars::before { width: 90%; }
.rating-stars[data-rating="4.4"] .stars::before { width: 88%; }
.rating-stars[data-rating="4.1"] .stars::before { width: 82%; }
.rating-stars[data-rating="4"] .stars::before { width: 80%; }
.rating-stars[data-rating="3.6"] .stars::before { width: 72%; }
.rating-stars[data-rating="3"] .stars::before { width: 60%; }
.rating-stars[data-rating="2"] .stars::before { width: 40%; }
.rating-stars[data-rating="1"] .stars::before { width: 20%; }

/* Reviews Carousel */
.reviews__carousel {
    position: relative;
    overflow: hidden;
    margin: var(--spacing-xl) 0;
}

.reviews__track {
    display: flex;
    gap: var(--spacing-lg);
    transition: transform 0.5s ease;
}

.review-card {
    flex: 0 0 calc(33.333% - var(--spacing-lg));
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    min-height: 250px;
}

.review-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.review-card__date {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.review-card__text {
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.review-card__details {
    margin-top: auto;
}

.review-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--success-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    margin-right: var(--spacing-sm);
}

.review-ratings {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

.review-context {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.context-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--background-light);
    border-radius: var(--radius-sm);
}

.reviews__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition-fast);
    z-index: 1;
}

.reviews__nav:hover {
    transform: translateY(-50%) scale(1.1);
}

.reviews__nav--prev {
    left: -20px;
}

.reviews__nav--next {
    right: -20px;
}

.reviews__popular-tags {
    margin-bottom: var(--spacing-xl);
}

.reviews__popular-tags h3 {
    margin-bottom: var(--spacing-md);
}

/* Hours Section */
.hours {
    padding: var(--spacing-xxl) 0;
}

.hours__content {
    max-width: 600px;
    margin: 0 auto;
}

.hours__schedule {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.hours__day {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.hours__day:last-child {
    border-bottom: none;
}

.hours__day--closed {
    background: var(--background-light);
    color: var(--text-secondary);
}

.hours__day--current {
    background: var(--primary-color);
    color: white;
}

.hours__status {
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.hours__status.open {
    color: var(--success-color);
    font-weight: bold;
}

.hours__status.closed {
    color: var(--primary-color);
}

/* Contact Section */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--background-light);
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact__info {
    display: grid;
    gap: var(--spacing-lg);
}

.contact__item h3 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

address {
    font-style: normal;
    line-height: 1.8;
}

.contact__location {
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
}

.service-list,
.features-list {
    list-style: none;
    padding: 0;
}

.service-list li,
.features-list li {
    padding: var(--spacing-xs) 0;
}

.contact__actions {
    margin-top: var(--spacing-lg);
}

.contact__map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* Similar Section */
.similar {
    padding: var(--spacing-xxl) 0;
}

.similar__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.similar-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.similar-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.similar-card__title {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.similar-card__rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer__brand h3 {
    margin-bottom: var(--spacing-sm);
}

.footer__brand p {
    opacity: 0.8;
}

.footer__info p {
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.6;
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    z-index: 900;
}

.scroll-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    display: flex;
}

/* Media Queries */
@media (max-width: 1024px) {
    .about__content {
        grid-template-columns: 1fr;
    }

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

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

    .reviews__average {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-right: 0;
        padding-bottom: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    .review-card {
        flex: 0 0 calc(50% - var(--spacing-lg));
    }
}

@media (max-width: 768px) {
    .navigation__menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        display: none;
    }

    .navigation__menu.active {
        display: flex;
    }

    .navigation__toggle {
        display: flex;
    }

    .hero__info {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

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

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

    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .review-card {
        flex: 0 0 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero__actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}