:root {
  /* Base (overridden by themes) */
  --bg: #ffffff;
  --text: #101214;
  --muted: #5c6370;
  --primary: #006d77;
  --accent: #00bcd4;

  /* Surfaces */
  --surface: #f6f8fa;
  --card: #ffffff;

  /* Elevation & shadow */
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);

  /* Waves */
  --wave1: rgba(0, 188, 212, 0.55);
  --wave2: rgba(0, 188, 212, 0.35);
}

/* Themes */
[data-theme="light"] {
  --bg: #ffffff;
  --text: #101214;
  --muted: #5c6370;
  --primary: #006d77;
  --accent: #00bcd4;
  --surface: #f6f8fa;
  --card: #ffffff;
  --wave1: rgba(0, 188, 212, 0.55);
  --wave2: rgba(0, 188, 212, 0.35);
}
[data-theme="dark"] {
  --bg: #0f1115;
  --text: #e6edf3;
  --muted: #9aa4b2;
  --primary: #7dd3fc;
  --accent: #22d3ee;
  --surface: #151922;
  --card: #1a1f2b;
  --wave1: rgba(34, 211, 238, 0.5);
  --wave2: rgba(34, 211, 238, 0.25);
}
[data-theme="sunset"] {
  --bg: #1b0e08;
  --text: #fde7c9;
  --muted: #f7c79e;
  --primary: #ff7d4d;
  --accent: #ffb347;
  --surface: #2a150b;
  --card: #2f180d;
  --wave1: rgba(255, 179, 71, 0.55);
  --wave2: rgba(255, 125, 77, 0.35);
}
[data-theme="rainforest"] {
  --bg: #0b1f14;
  --text: #e8f5e9;
  --muted: #a5d6a7;
  --primary: #2e7d32;
  --accent: #66bb6a;
  --surface: #123121;
  --card: #163826;
  --wave1: rgba(102, 187, 106, 0.55);
  --wave2: rgba(46, 125, 50, 0.4);
}
[data-theme="beach"] {
  --bg: #f6fbff;
  --text: #113b5a;
  --muted: #567793;
  --primary: #00a3ff;
  --accent: #00d4ff;
  --surface: #eaf5ff;
  --card: #ffffff;
  --wave1: rgba(0, 212, 255, 0.55);
  --wave2: rgba(0, 163, 255, 0.35);
}

/* Global */
* { box-sizing: border-box; }
html, body {
  height: 100%;
}
body {
  margin: 0;
  font-family: 'Outfit', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
  transition: background 300ms ease, color 300ms ease;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--surface) 50%, transparent);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.2px;
}
.logo img {
  width: 36px; height: 36px;
}
.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.nav-link {
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}
.nav-link:hover { background: var(--surface); }
.controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.theme-label { color: var(--muted); }

/* Buttons */
.btn {
  --btn-bg: var(--surface);
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid color-mix(in oklab, var(--surface) 50%, transparent);
  background: var(--btn-bg);
  color: var(--btn-fg);
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, background 200ms ease, color 200ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { --btn-bg: var(--primary); --btn-fg: #ffffff; }
.btn.ghost { --btn-bg: transparent; --btn-fg: var(--text); border-color: color-mix(in oklab, var(--text) 30%, transparent); }

/* Hero */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2rem;
  padding: 3rem 1rem 6rem;
}
.hero-media img, .hero-media video {
  width: 100%;
  height: 60vh;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.hero-content h1 { font-size: clamp(1.8rem, 3.5vw, 3rem); margin: 0 0 0.5rem; }
.hero-content p { color: var(--muted); margin: 0 0 1rem; }
.cta { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Waves */
.wave-wrap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 120px;
  pointer-events: none;
}
.wave {
  position: absolute;
  left: 0; bottom: 0;
  width: 200%;
  height: 120px;
  fill: none;
}
.wave path { fill: var(--wave1); }
.wave-2 path { fill: var(--wave2); }
.wave-1 { animation: waveShift 9s linear infinite; }
.wave-2 { animation: waveShift 13s linear infinite reverse; opacity: 0.9; }
@keyframes waveShift {
  0% { transform: translateX(0) translateY(0); }
  50% { transform: translateX(-25%) translateY(4px); }
  100% { transform: translateX(-50%) translateY(0); }
}

/* Section header */
.section-header {
  text-align: center;
  margin: 2.5rem 0 1rem;
}
.section-header h2 {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  margin: 0 0 0.25rem;
}
.section-header p {
  margin: 0;
  color: var(--muted);
}

/* Destinations */
.destinations { padding: 2rem 1rem 3rem; }
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.card {
  background: var(--card);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: translateZ(0);
}
.card img {
  width: 100%; height: 190px; object-fit: cover;
}
.card-body { padding: 0.75rem 1rem 1rem; }
.card-body h3 { margin: 0 0 0.25rem; }
.card-body p { margin: 0; color: var(--muted); }

/* Parallax hint */
.parallax { will-change: transform; }

/* Planner */
.planner { padding: 2rem 1rem 3rem; }
.planner-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  gap: 1rem;
}
.pool, .itinerary, .suggestions {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
  min-height: 220px;
}
.pool { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  background: var(--surface);
  border: 1px solid color-mix(in oklab, var(--text) 15%, transparent);
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  cursor: grab;
}
.itinerary { display: grid; align-content: start; gap: 0.5rem; }
.hint { color: var(--muted); margin: 0; }
.suggestions .controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1rem;
  align-items: center;
  margin-bottom: 0.75rem;
}
.feedback { color: var(--muted); }

/* Virtual */
.virtual { padding: 2rem 1rem 3rem; }
.virtual-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  box-shadow: var(--shadow);
  max-width: 1100px;
  margin: 0 auto;
}
.panorama {
  display: block;
  width: 100%;
  height: 360px;
  object-fit: cover;
  transform-origin: center;
  transition: transform 400ms ease;
}

/* Nyota */
.nyota { padding: 2rem 1rem 3rem; }
.nyota-ui .chat {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
  max-width: 900px;
  margin: 0 auto;
}
.chat-log {
  min-height: 160px;
  display: grid;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
}
.chat-bubble {
  padding: 0.6rem 0.8rem;
  border-radius: 12px;
  max-width: 70ch;
}
.chat-bubble.user {
  background: color-mix(in oklab, var(--primary) 12%, var(--surface));
  justify-self: end;
}
.chat-bubble.nyota {
  background: var(--surface);
  color: var(--text);
  justify-self: start;
}
.chat-controls {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 0.5rem;
}
#chatInput {
  padding: 0.6rem 0.75rem;
  border: 1px solid color-mix(in oklab, var(--text) 12%, transparent);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}

/* Contact */
.contact { padding: 2rem 1rem 3rem; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.contact-icons {
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 1fr));
  gap: 0.75rem;
  align-content: start;
}
.contact-icon {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 120ms ease, background 200ms ease;
}
.contact-icon:hover { transform: translateY(-1px); }
.contact-icon img {
  width: 36px; height: 36px;
}
.contact-icon span {
  font-weight: 600;
}
.contact-form {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
}
.form-row { display: grid; gap: 0.25rem; margin-bottom: 0.75rem; }
.form-row input, .form-row textarea {
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid color-mix(in oklab, var(--text) 12%, transparent);
  background: var(--surface);
  color: var(--text);
}
.form-feedback { color: var(--muted); margin-top: 0.5rem; }

/* Footer */
.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem;
  border-top: 1px solid color-mix(in oklab, var(--surface) 50%, transparent);
}
.socials { display: flex; gap: 0.75rem; }
.socials a { color: var(--muted); text-decoration: none; }

/* Responsive */
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
  .planner-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; }
  .hero-media img { height: 48vh; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .chat-controls { grid-template-columns: 1fr auto auto auto; }
  .contact-icon img { width: 40px; height: 40px; } /* Larger on touch */
}
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .nav { display: none; } /* Simplify for very small screens or convert to burger in future */
  .contact-icon { padding: 1rem; }
  .contact-icon img { width: 44px; height: 44px; } /* Even larger for thumb reach */
}
/* === Wave Animation === */
.wave-wrap {
  position: relative;
  overflow: hidden;
  height: 200px; /* adjust height as needed */
}
.wave {
  position: absolute;
  bottom: 0;
  width: 200%;
  height: 100%;
}
.wave-1 {
  animation: waveSlide 12s linear infinite;
  opacity: 0.6;
}
.wave-2 {
  animation: waveSlide 20s linear infinite reverse;
  opacity: 0.8;
}
@keyframes waveSlide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}