/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
  /* Colors - Casual Thai Food Theme */
  --color-primary: #e74c3c;
  --color-primary-dark: #c0392b;
  --color-primary-light: #f39c12;
  --color-secondary: #27ae60;
  --color-accent: #f39c12;
  --color-dark: #2c3e50;
  --color-dark-alt: #34495e;
  --color-light: #ecf0f1;
  --color-white: #ffffff;
  --color-gray: #95a5a6;
  --color-gray-light: #bdc3c7;

  /* Typography */
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-secondary: Georgia, 'Times New Roman', serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;

  /* Layout */
  --container-max: 1140px;
  --container-padding: 20px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

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

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

a:hover {
  color: var(--color-primary);
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-family: var(--font-secondary);
  font-size: 2.5rem;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray);
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-align: center;
  cursor: pointer;
}

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

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

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: background var(--transition-normal);
}

.navbar.scrolled {
  background: var(--color-white);
}

.navbar__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--container-padding);
}

.navbar__brand {
  flex: 0 0 auto;
}

.navbar__title {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 700;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.navbar__toggle span {
  width: 25px;
  height: 3px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.navbar__menu {
  display: flex;
  gap: var(--spacing-md);
}

.navbar__link {
  font-weight: 500;
  color: var(--color-dark);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.navbar__link:hover {
  background: var(--color-light);
  color: var(--color-primary);
}

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

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: slowZoom 20s ease-in-out infinite alternate;
}

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

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(231, 76, 60, 0.7), rgba(192, 57, 43, 0.8));
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: var(--spacing-md);
}

.hero__title {
  font-family: var(--font-secondary);
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  animation: fadeInUp 1s ease;
}

.hero__subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
  animation: fadeInUp 1s ease 0.2s backwards;
}

.hero__rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease 0.4s backwards;
}

.rating-stars {
  display: flex;
  gap: 4px;
}

.star {
  font-size: 1.5rem;
  color: #ffd700;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.star.filled {
  color: #ffd700;
}

.star.half::before {
  content: '★';
  position: absolute;
  width: 50%;
  overflow: hidden;
  color: #ffd700;
}

.star.empty {
  color: rgba(255, 255, 255, 0.3);
}

.rating-text {
  font-size: 1.125rem;
  font-weight: 500;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.6s backwards;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-left: 2px solid var(--color-white);
  border-bottom: 2px solid var(--color-white);
  transform: rotate(-45deg);
  margin: 8px auto 0;
}

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

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features {
  background: var(--color-light);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

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

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

.feature-card__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.feature-card__text {
  color: var(--color-gray);
  line-height: 1.6;
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
  background: var(--color-white);
}

.about__content {
  max-width: 800px;
  margin: 0 auto;
}

.about__text {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark-alt);
}

.about__highlights {
  background: var(--color-light);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-gray-light);
}

.highlight-item:last-child {
  border-bottom: none;
}

.highlight-item strong {
  color: var(--color-primary);
  font-weight: 600;
}

.highlight-item span {
  color: var(--color-dark-alt);
}

/* ========================================
   GALLERY SECTION
   ======================================== */
.gallery {
  background: var(--color-light);
}

.gallery__filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.gallery__filter {
  padding: 10px 24px;
  background: var(--color-white);
  color: var(--color-dark);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.gallery__filter:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: pointer;
  aspect-ratio: 4/3;
  background: var(--color-gray-light);
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.gallery__item::after {
  content: '🔍';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gallery__item:hover::after {
  opacity: 1;
}

/* ========================================
   REVIEWS SECTION
   ======================================== */
.reviews {
  background: var(--color-white);
}

.reviews__summary {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.reviews__rating {
  text-align: center;
}

.reviews__score {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--spacing-sm);
}

.reviews__count {
  display: block;
  color: var(--color-gray);
  margin-top: var(--spacing-sm);
}

.reviews__distribution {
  min-width: 300px;
}

.distribution-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.distribution-bar span:first-child {
  width: 30px;
  font-weight: 500;
}

.distribution-bar .bar {
  flex: 1;
  height: 8px;
  background: var(--color-light);
  border-radius: 4px;
  overflow: hidden;
}

.distribution-bar .fill {
  height: 100%;
  background: var(--color-accent);
  transition: width var(--transition-slow);
}

.distribution-bar span:last-child {
  width: 30px;
  text-align: right;
  color: var(--color-gray);
  font-size: 0.875rem;
}

.reviews__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.review-card {
  background: var(--color-light);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.review-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

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

.review-card__rating .star {
  font-size: 1.125rem;
}

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

.review-card__text {
  color: var(--color-dark-alt);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.review-card__details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.detail-badge {
  background: var(--color-white);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-dark);
}

.reviews__load-more {
  display: block;
  margin: var(--spacing-lg) auto 0;
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
  background: var(--color-light);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

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

.info-card {
  background: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.info-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.info-card__text {
  color: var(--color-dark-alt);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.info-card__text a {
  color: var(--color-primary);
  font-weight: 500;
}

.info-card__link {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 500;
  margin-top: var(--spacing-sm);
}

.info-card__note {
  color: var(--color-gray);
  font-size: 0.875rem;
  font-style: italic;
}

.hours-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.hours-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-light);
}

.hours-item:last-child {
  border-bottom: none;
}

.hours-item .day {
  font-weight: 500;
  color: var(--color-dark);
}

.hours-item .time {
  color: var(--color-primary);
  font-weight: 500;
}

.payment-methods {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.payment-badge {
  background: var(--color-light);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-dark);
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  min-height: 450px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer__title {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.footer__description {
  color: var(--color-gray-light);
  line-height: 1.6;
}

.footer__heading {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__list li {
  color: var(--color-gray-light);
}

.footer__list a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-dark-alt);
  color: var(--color-gray-light);
}

/* ========================================
   LIGHTBOX
   ======================================== */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  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: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  border: none;
  font-size: 2rem;
  padding: 16px 20px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-radius: var(--radius-sm);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255, 255, 255, 0.3);
}

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

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

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

/* ========================================
   SCROLL TO TOP BUTTON
   ======================================== */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-5px);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 1023px) {
  .section-title {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 3rem;
  }

  .hero__subtitle {
    font-size: 1.25rem;
  }

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

/* Mobile */
@media (max-width: 767px) {
  :root {
    --spacing-xl: 2.5rem;
    --spacing-lg: 2rem;
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-normal);
  }

  .navbar__menu.active {
    left: 0;
  }

  .navbar__link {
    display: block;
    padding: var(--spacing-sm);
  }

  .section-title {
    font-size: 1.75rem;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .hero__buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

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

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

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

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

  .lightbox__prev,
  .lightbox__next {
    font-size: 1.5rem;
    padding: 12px 16px;
  }

  .scroll-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .hero {
    min-height: 500px;
  }

  .section {
    padding: var(--spacing-md) 0;
  }
}