/* ============================================
   Golden Dragon Restaurant — Landing Page Styles
   Color palette: deep crimson, gold, charcoal, warm white
   ============================================ */

:root {
  --crimson: #8B1A1A;
  --crimson-dark: #6B1010;
  --gold: #C9A84C;
  --gold-light: #D4B965;
  --charcoal: #1A1A1A;
  --charcoal-light: #2A2A2A;
  --warm-white: #FAF7F2;
  --cream: #F5F0E8;
  --text-primary: #1A1A1A;
  --text-secondary: #5A5A5A;
  --text-light: #FAF7F2;
  --font-heading: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-chinese: 'Noto Serif SC', serif;
  --transition: 0.3s ease;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
  --radius: 8px;
}

*,
*::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(--text-primary);
  background: var(--warm-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

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

/* ---- Section Headers ---- */

.section-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Buttons ---- */

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: var(--crimson);
  color: var(--text-light);
}

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

.btn-outline {
  background: transparent;
  color: var(--text-light);
  border: 2px solid rgba(255,255,255,0.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* ============================================
   NAVBAR
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s ease;
}

.navbar.scrolled {
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-chinese {
  font-family: var(--font-chinese);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold);
}

.logo-english {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--gold);
}

.btn-nav {
  padding: 10px 24px !important;
  background: var(--crimson);
  color: #fff !important;
  border-radius: var(--radius);
}

.btn-nav:hover {
  background: var(--crimson-dark) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all var(--transition);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('assets/customers.jpg') center/cover no-repeat;
  color: var(--text-light);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26,26,26,0.6) 0%,
    rgba(26,26,26,0.4) 50%,
    rgba(26,26,26,0.7) 100%
  );
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 580px;
  margin: 0 auto 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.3);
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.3; }
  50% { transform: scaleY(1.5); opacity: 1; }
}

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

/* ============================================
   ABOUT
   ============================================ */

.about {
  padding: 120px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius);
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.about-image-accent {
  position: absolute;
  top: -16px;
  left: -16px;
  width: 120px;
  height: 120px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  z-index: -1;
}

.about-text h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--charcoal);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid rgba(0,0,0,0.1);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--crimson);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ============================================
   SPECIALTIES
   ============================================ */

.specialties {
  background: var(--charcoal);
  padding: 80px 0;
}

.specialties-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.specialty-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}

.specialty-card:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--gold);
  transform: translateY(-4px);
}

.specialty-icon {
  font-size: 2.5rem;
  color: var(--gold);
  margin-bottom: 20px;
}

.specialty-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--gold);
  margin-bottom: 12px;
}

.specialty-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}

/* ============================================
   MENU
   ============================================ */

.menu {
  padding: 120px 0;
  background: var(--cream);
}

.menu-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-secondary);
}

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

.menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.menu-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.menu-card.hidden {
  display: none;
}

.menu-card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.menu-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.menu-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: var(--crimson);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 50px;
}

.menu-card-body {
  padding: 20px;
}

.menu-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
  gap: 8px;
}

.menu-card-header h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.3;
}

.menu-price {
  font-weight: 600;
  color: var(--crimson);
  white-space: nowrap;
  font-size: 0.95rem;
}

.menu-card-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.menu-cta {
  text-align: center;
  margin-top: 48px;
}

/* ============================================
   PARALLAX DIVIDER
   ============================================ */

.parallax-divider {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('assets/working.jpg') center/cover no-repeat fixed;
}

.parallax-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.75);
}

.parallax-content {
  position: relative;
  text-align: center;
  padding: 0 24px;
}

.parallax-content blockquote p {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--text-light);
  font-style: italic;
  max-width: 700px;
  margin: 0 auto 20px;
  line-height: 1.5;
}

.parallax-content cite {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--gold);
  font-style: normal;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ============================================
   GALLERY
   ============================================ */

.gallery {
  padding: 120px 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  min-height: 250px;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-large {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item-large img {
  min-height: 100%;
}

.gallery-item-wide {
  grid-column: span 2;
}

/* ============================================
   TESTIMONIALS
   ============================================ */

.testimonials {
  padding: 120px 0;
  background: var(--charcoal);
}

.testimonials .section-label {
  color: var(--gold);
}

.testimonials .section-header h2 {
  color: var(--text-light);
}

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

.testimonial-card {
  background: var(--charcoal-light);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 36px;
  transition: all var(--transition);
}

.testimonial-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-card p {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.author-name {
  display: block;
  color: var(--text-light);
  font-weight: 600;
  font-size: 0.9rem;
}

.author-detail {
  font-size: 0.8rem;
  color: var(--gold);
}

/* ============================================
   RESERVATION
   ============================================ */

.reserve {
  padding: 120px 0;
  background: var(--warm-white);
}

.reserve-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.reserve-info h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 16px;
}

.reserve-info > p {
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.reserve-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.reserve-detail h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--charcoal);
}

.reserve-detail p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.dim-text {
  font-style: italic;
  opacity: 0.7;
}

.reserve-form-wrapper {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.reserve-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--warm-white);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--crimson);
}

.form-group textarea {
  resize: vertical;
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-top: -8px;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: var(--charcoal);
  padding: 60px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand .logo-chinese {
  font-size: 2rem;
}

.footer-brand .logo-english {
  font-size: 1rem;
}

.footer-tagline {
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  margin-top: 8px;
  max-width: 300px;
}

.footer-nav {
  display: flex;
  gap: 28px;
}

.footer-nav a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--gold);
}

.footer-bottom {
  padding-top: 32px;
  text-align: center;
}

.demo-notice {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  max-width: 700px;
  margin: 0 auto 16px;
  line-height: 1.6;
  padding: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
}

.copyright {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

/* ============================================
   ANIMATIONS (scroll reveal)
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 1024px) {
  .menu-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .specialties-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .reserve-grid {
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--charcoal);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: right 0.4s ease;
  }

  .nav-links.open {
    right: 0;
  }

  .about-grid,
  .reserve-grid {
    grid-template-columns: 1fr;
  }

  .about-image img {
    height: 350px;
  }

  .about-stats {
    gap: 24px;
  }

  .menu-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item-large {
    grid-column: span 2;
    grid-row: span 1;
  }

  .gallery-item-wide {
    grid-column: span 2;
  }

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }
}

@media (max-width: 480px) {
  .menu-grid {
    grid-template-columns: 1fr;
  }

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

  .about-stats {
    flex-direction: column;
    gap: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .gallery-item-large,
  .gallery-item-wide {
    grid-column: span 1;
  }
}