/* ============================================================
   ณัฐธนา อพาร์ทเม้นท์ — Design System
   โทนสี: ครีมอบอุ่น เป็นมิตร
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* --- CSS Variables --- */
:root {
  --color-bg: #FFF8F4;
  --color-bg-warm: #FFF1E5;
  --color-surface: #FBEBDC;
  --color-surface-high: #F5E6D6;
  --color-surface-highest: #EFE0D1;
  --color-surface-dim: #E7D8C8;
  --color-primary: #331D01;
  --color-primary-mid: #5D411F;
  --color-primary-light: #7C5730;
  --color-primary-container: #4B3211;
  --color-secondary: #7C5730;
  --color-secondary-container: #FDCB9B;
  --color-secondary-light: #FFDCBD;
  --color-accent: #E7C093;
  --color-accent-bright: #FFDDB8;
  --color-text: #221A11;
  --color-text-muted: #4F453B;
  --color-text-light: #80756A;
  --color-outline: #D2C4B7;
  --color-white: #FFFFFF;
  --color-error: #BA1A1A;
  --color-success: #4A6B47;
  --color-star: #F4B400;
  --color-overlay: rgba(0,0,0,0.6);

  --font-main: 'Noto Sans Thai', sans-serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(51,29,1,0.08);
  --shadow-md: 0 4px 12px rgba(51,29,1,0.1);
  --shadow-lg: 0 8px 32px rgba(51,29,1,0.12);
  --shadow-xl: 0 16px 48px rgba(51,29,1,0.15);
  --transition-fast: 0.2s ease;
  --transition-mid: 0.4s ease;
  --transition-slow: 0.7s ease;
  --max-width: 1280px;
  --gutter: 24px;
  --px-mobile: 16px;
  --px-desktop: 40px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; font-family: inherit; }
input { font-family: inherit; }

/* --- Typography --- */
.text-xs { font-size: 12px; line-height: 1.4; letter-spacing: 0.04em; }
.text-sm { font-size: 14px; line-height: 1.5; }
.text-base { font-size: 16px; line-height: 1.6; }
.text-lg { font-size: 18px; line-height: 1.6; }
.text-xl { font-size: 20px; line-height: 1.4; }
.text-2xl { font-size: 24px; line-height: 1.3; }
.text-3xl { font-size: 32px; line-height: 1.3; }
.text-4xl { font-size: 40px; line-height: 1.2; }
.text-5xl { font-size: 48px; line-height: 1.15; letter-spacing: -0.02em; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--px-desktop);
  padding-right: var(--px-desktop);
}

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,248,244,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(210,196,183,0.3);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.navbar.scrolled {
  background: rgba(255,248,244,0.95);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--px-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-logo .icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-secondary-container), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 20px;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.navbar-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.navbar-nav a:hover {
  color: var(--color-secondary);
  background: rgba(124,87,48,0.08);
}

.navbar-nav a.active {
  color: var(--color-primary);
  background: rgba(124,87,48,0.1);
  font-weight: 600;
}

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

.navbar-map-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.navbar-map-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  opacity: 0.9;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  background: none;
  padding: 8px;
  color: var(--color-primary);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: rgba(255,248,244,0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  animation: slideDown 0.3s ease;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.mobile-nav a:hover, .mobile-nav a.active {
  background: rgba(124,87,48,0.1);
  color: var(--color-primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  opacity: 0.9;
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  opacity: 0.9;
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-primary);
  border: 1.5px solid var(--color-outline);
}
.btn-outline:hover {
  background: var(--color-surface);
  border-color: var(--color-secondary);
  transform: translateY(-1px);
}

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

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 13px;
}

.btn-icon {
  width: 44px; height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-mid);
  border: 1px solid rgba(210,196,183,0.2);
}

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

.card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.card-body {
  padding: 20px 24px;
}

.card-img-wrapper {
  overflow: hidden;
  position: relative;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 700px;
  overflow: hidden;
}

.hero-slider {
  display: flex;
  height: 100%;
  transition: transform 1s ease-in-out;
}

.hero-slide {
  min-width: 100%;
  height: 100%;
  position: relative;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255,248,244,0.95) 35%, rgba(255,248,244,0) 100%);
  display: flex;
  align-items: center;
  z-index: 10;
}

.hero-content {
  max-width: 600px;
  padding-left: var(--px-desktop);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(124,87,48,0.1);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-title .highlight {
  color: var(--color-secondary);
  font-style: italic;
}

.hero-desc {
  font-size: 18px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.5);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.hero-stat-icon {
  width: 40px; height: 40px;
  background: var(--color-secondary-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
}

.hero-stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
}

/* Slider dots */
.slider-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 10px; height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-outline);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.slider-dot.active {
  width: 32px;
  background: var(--color-secondary);
}

/* Floating Badge */
.floating-badge {
  position: absolute;
  right: var(--px-desktop);
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  animation: float 3s ease-in-out infinite;
}

.floating-badge-inner {
  background: var(--color-success);
  color: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-full);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-xl);
  border: 4px solid var(--color-white);
  min-width: 140px;
}

/* --- Review Card Overlay --- */
.review-card-overlay {
  position: absolute;
  bottom: 32px;
  right: var(--px-desktop);
  z-index: 20;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(16px);
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 280px;
  border: 1px solid rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.review-card-overlay:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-xl);
}

.review-stars {
  display: flex;
  color: var(--color-star);
}

.review-stars .material-symbols-outlined {
  font-size: 18px;
  font-variation-settings: 'FILL' 1;
}

/* --- AI Search --- */
.ai-section {
  background: var(--color-surface);
  border-radius: 40px;
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ai-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(253,203,155,0.3), transparent 60%),
              radial-gradient(ellipse at bottom left, rgba(231,192,147,0.2), transparent 60%);
  pointer-events: none;
}

.ai-input-wrap {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.ai-input {
  width: 100%;
  background: var(--color-white);
  border: 2px solid rgba(210,196,183,0.3);
  border-radius: var(--radius-full);
  padding: 18px 140px 18px 24px;
  font-size: 16px;
  color: var(--color-text);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.ai-input:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 4px rgba(124,87,48,0.1);
}

.ai-input::placeholder {
  color: var(--color-text-light);
}

.ai-submit-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.ai-submit-btn:hover {
  transform: translateY(-50%) scale(1.05);
}

.ai-response {
  max-width: 640px;
  margin: 24px auto 0;
  text-align: left;
  background: rgba(255,255,255,0.6);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: none;
  animation: fadeSlideUp 0.5s ease;
}

.ai-response.show { display: block; }

.ai-response-inner {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.ai-avatar {
  width: 40px; height: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.ai-typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 8px 0;
}
.ai-typing span {
  width: 8px; height: 8px;
  background: var(--color-text-light);
  border-radius: 50%;
  animation: typingBounce 1.2s infinite;
}
.ai-typing span:nth-child(2) { animation-delay: 0.15s; }
.ai-typing span:nth-child(3) { animation-delay: 0.3s; }

/* --- AI Chatbot Messages --- */
.ai-msg {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  animation: fadeSlideUp 0.4s ease;
}

.ai-msg-bot {
  align-items: flex-start;
}

.ai-msg-user {
  justify-content: flex-end;
  align-items: flex-start;
}

.ai-bubble {
  max-width: 85%;
  padding: 14px 18px;
  border-radius: 20px;
  font-size: 15px;
  line-height: 1.7;
  word-break: break-word;
}

.ai-bubble p {
  margin: 0;
}

.ai-bubble-bot {
  background: var(--color-white);
  color: var(--color-text);
  border: 1px solid rgba(210,196,183,0.3);
  border-top-left-radius: 6px;
  box-shadow: 0 1px 4px rgba(51,29,1,0.06);
}

.ai-bubble-user {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-mid));
  color: var(--color-white);
  border-top-right-radius: 6px;
}

.ai-bubble-user p {
  color: var(--color-white);
}

.ai-avatar-user {
  width: 36px; height: 36px;
  background: var(--color-secondary-container);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.ai-avatar {
  width: 36px; height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

/* Suggestion Chips */
.ai-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--color-white);
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  white-space: nowrap;
}

.ai-chip:hover {
  background: var(--color-bg-warm);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Chat box scrollbar */
#ai-chat-box::-webkit-scrollbar { width: 6px; }
#ai-chat-box::-webkit-scrollbar-track { background: transparent; }
#ai-chat-box::-webkit-scrollbar-thumb { background: var(--color-outline); border-radius: 3px; }
#ai-chat-box::-webkit-scrollbar-thumb:hover { background: var(--color-text-light); }

/* --- Room Grid --- */
.rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--gutter);
}

.room-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--color-success);
  color: var(--color-white);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  z-index: 2;
}

.room-floor-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(51,29,1,0.7);
  color: var(--color-white);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.room-amenities {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.room-amenity {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-bg-warm);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--color-text-muted);
}

.room-amenity .material-symbols-outlined {
  font-size: 14px;
}

/* Room filter buttons */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  background: var(--color-white);
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-outline);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

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

/* --- Room Detail --- */
.room-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 8px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  max-height: 500px;
}

.room-gallery-main {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  transition: transform var(--transition-slow);
}

.room-gallery-main:hover { transform: scale(1.02); }

.room-gallery-side {
  display: grid;
  gap: 8px;
}

.room-gallery-side img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  transition: transform var(--transition-slow);
}

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

.room-info-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.room-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.room-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--color-bg-warm);
  border-radius: var(--radius-md);
}

.room-feature-icon {
  width: 40px; height: 40px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
}

/* --- Facilities Carousel --- */
.facilities-carousel {
  display: flex;
  gap: var(--gutter);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 20px 0;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.facilities-carousel::-webkit-scrollbar { display: none; }

.facility-card {
  min-width: 360px;
  scroll-snap-align: center;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
  transition: transform var(--transition-mid);
}

.facility-card:hover { transform: scale(1.02); }

.facility-card img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.facility-card-info {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  background: linear-gradient(to top, rgba(51,29,1,0.85), transparent);
  padding: 60px 24px 24px;
  color: var(--color-white);
}

.facility-card-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.facility-card-info p {
  font-size: 14px;
  opacity: 0.85;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.carousel-btn {
  width: 48px; height: 48px;
  background: var(--color-white);
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

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

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(210,196,183,0.2);
  transition: all var(--transition-mid);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

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

.contact-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.contact-icon.phone { background: #E8F5E9; color: #2E7D32; }
.contact-icon.line { background: #E8F5E9; color: #06C755; }
.contact-icon.facebook { background: #E3F2FD; color: #1877F2; }
.contact-icon.map { background: #FFF3E0; color: #E65100; }

/* --- Modal --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--color-overlay);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

.modal-backdrop.open { display: flex; }

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 420px;
  width: 100%;
  position: relative;
  animation: scaleIn 0.3s ease;
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: none;
  color: var(--color-text-muted);
  padding: 4px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}
.modal-close:hover {
  background: rgba(0,0,0,0.05);
  color: var(--color-primary);
}

/* --- Section Headers --- */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
}

.section-link {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.section-link:hover {
  gap: 8px;
  text-decoration: underline;
}

/* --- Emoji Burst --- */
.emoji-burst {
  position: fixed;
  pointer-events: none;
  font-size: 24px;
  z-index: 3000;
  animation: emojiBurst 1.8s ease-out forwards;
}

/* --- Page Header (for sub-pages) --- */
.page-header {
  padding-top: 120px;
  padding-bottom: 40px;
  background: linear-gradient(180deg, var(--color-bg-warm) 0%, var(--color-bg) 100%);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--color-secondary);
  transition: color var(--transition-fast);
}
.breadcrumb a:hover { color: var(--color-primary); }

/* --- Footer --- */
.footer {
  background: var(--color-surface-high);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-secondary); }

.footer-bottom {
  border-top: 1px solid var(--color-outline);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--color-text-light);
}

/* --- Map embed --- */
.map-container {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-container iframe {
  width: 100%;
  height: 400px;
  border: none;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(0,0,0,0.9);
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: 20px; right: 20px;
  background: rgba(255,255,255,0.2);
  color: white;
  width: 48px; height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  backdrop-filter: blur(4px);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.lightbox-close:hover { background: rgba(255,255,255,0.4); }

/* --- Animations --- */
@keyframes float {
  0%, 100% { transform: translateY(-50%); }
  50% { transform: translateY(calc(-50% - 12px)); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes emojiBurst {
  0% { transform: scale(0) translateY(0) rotate(0deg); opacity: 1; }
  50% { opacity: 1; }
  100% { transform: scale(1.3) translateY(-80px) rotate(20deg); opacity: 0; }
}

@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(-6px); opacity: 1; }
}

@keyframes shimmer {
  0% { background-position: -200px 0; }
  100% { background-position: 200px 0; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fade-in {
  animation: fadeSlideUp 0.6s ease both;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-outline); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-light); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .navbar-nav { display: none; }
  .menu-toggle { display: flex; }
  .hero { height: 600px; }
  .hero-title { font-size: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .floating-badge { display: none; }
  .review-card-overlay { display: none; }
  .room-info-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .rooms-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
  :root {
    --px-desktop: 16px;
  }
  .hero { height: 550px; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .ai-section { padding: 40px 20px; border-radius: var(--radius-xl); }
  .ai-input { padding: 14px 120px 14px 20px; font-size: 14px; }
  .ai-submit-btn { padding: 10px 20px; font-size: 13px; }
  .room-gallery { grid-template-columns: 1fr; max-height: none; }
  .room-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .facility-card { min-width: 300px; }
  .facility-card img { height: 300px; }
}

@media (max-width: 480px) {
  .hero { height: 500px; }
  .hero-title { font-size: 24px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 16px; }
  .rooms-grid { grid-template-columns: 1fr; }
  .facility-card { min-width: 260px; }
}
/* โค้ดแก้ปัญหาหน้าจอมือถือเครื่องเล็ก (ของเพื่อน) ตัวหนังสือซ้อนกัน */
@media (max-width: 420px) {
    /* บังคับไม่ให้ชื่อ ณัฐธนา อพาร์ทเม้นท์ ตัดคำลงมาซ้อนกัน */
    .navbar-logo {
        font-size: 14px !important;
        white-space: nowrap !important;
        max-width: 55% !important;
    }

    /* จัดระยะช่องไฟแถบบนใหม่ให้พอดีจอแคบ */
    .navbar-inner {
        padding: 10px 8px !important;
        gap: 2px !important;
    }

    /* ลดขนาดหัวข้อ "มากกว่าที่พัก..." ไม่ให้ล้นและเบียดขึ้นไปข้างบน */
    h1, .hero-title {
        font-size: 1.6rem !important;
        line-height: 1.2 !important;
        margin-top: 10px !important;
    }
}