/* ============================================================
   css/base.css — Design Tokens, Reset, Typography, Utilities
   Truniqe — Editorial Luxury Travel Platform
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* --- Color Palette --- */
  --navy: #1A1A2E;
  --navy-mid: #16213E;
  --navy-light: #252550;
  --gold: #E8B86D;
  --gold-light: #F2CFA0;
  --gold-dark: #C9983A;
  --surface: #F7F4EF;
  --surface-dark: #EDE9E0;
  --surface-card: #FFFFFF;
  --white: #FFFFFF;
  --black: #0D0D0D;
  --text-primary: #1C1C1C;
  --text-secondary: #4A4A4A;
  --text-muted: #7A7A7A;
  --text-light: #A8A8A8;
  --success: #2D6A4F;
  --success-light: #D8F3DC;
  --error: #B5311A;
  --error-light: #FDECEA;
  --warning: #C9690E;
  --warning-light: #FEF3D4;
  --info: #1565C0;
  --info-light: #E3F2FD;

  /* --- Tag Colors --- */
  --tag-heritage: #8B5E3C;
  --tag-heritage-bg: #F5EDE3;
  --tag-offbeat: #2D6A4F;
  --tag-offbeat-bg: #D8F3DC;
  --tag-experience: #7B3F6E;
  --tag-experience-bg: #F3E0F1;

  /* --- Typography --- */
  --font-heading: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* --- Font Sizes (fluid) --- */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* --- Heading sizes (editorial serif) --- */
  --heading-hero: clamp(2.8rem, 7vw, 5.5rem);
  --heading-section: clamp(2rem, 4vw, 3rem);
  --heading-card: clamp(1.25rem, 2vw, 1.75rem);

  /* --- Spacing --- */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* --- Border Radius --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1), 0 16px 48px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15), 0 8px 24px rgba(0,0,0,0.1);
  --shadow-gold: 0 4px 20px rgba(232, 184, 109, 0.3);
  --shadow-navy: 0 8px 32px rgba(26, 26, 46, 0.4);

  /* --- Transitions --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-base: 250ms;
  --dur-slow: 400ms;
  --dur-slower: 600ms;

  /* --- Layout --- */
  --container-max: 1280px;
  --container-wide: 1440px;
  --container-narrow: 960px;
  --nav-height: 72px;

  /* --- Z-index --- */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ============================================================
   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;
  text-rendering: optimizeLegibility;
}

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

img, video {
  display: block;
  max-width: 100%;
}

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

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

input, select, textarea {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

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

/* ============================================================
   TYPOGRAPHY UTILITIES
   ============================================================ */
.font-heading { font-family: var(--font-heading); }
.font-body    { font-family: var(--font-body); }

.text-xs   { font-size: var(--text-xs); }
.text-sm   { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg   { font-size: var(--text-lg); }
.text-xl   { font-size: var(--text-xl); }
.text-2xl  { font-size: var(--text-2xl); }
.text-3xl  { font-size: var(--text-3xl); }
.text-4xl  { font-size: var(--text-4xl); }

.text-navy    { color: var(--navy); }
.text-gold    { color: var(--gold); }
.text-muted   { color: var(--text-muted); }
.text-white   { color: var(--white); }
.text-success { color: var(--success); }
.text-error   { color: var(--error); }

.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; }

.italic { font-style: italic; }
.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.08em; }
.tracking-wider { letter-spacing: 0.12em; }
.tracking-widest { letter-spacing: 0.2em; }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }

/* Editorial eyebrow */
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--sp-6);
  padding-right: var(--sp-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding-top: var(--sp-20);
  padding-bottom: var(--sp-20);
}

.section-sm {
  padding-top: var(--sp-12);
  padding-bottom: var(--sp-12);
}

.section-lg {
  padding-top: var(--sp-32);
  padding-bottom: var(--sp-32);
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.gap-8 { gap: var(--sp-8); }
.gap-12 { gap: var(--sp-12); }

/* Grid utilities */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================================
   SPACING UTILITIES
   ============================================================ */
.mt-2  { margin-top: var(--sp-2); }
.mt-4  { margin-top: var(--sp-4); }
.mt-6  { margin-top: var(--sp-6); }
.mt-8  { margin-top: var(--sp-8); }
.mt-12 { margin-top: var(--sp-12); }
.mt-16 { margin-top: var(--sp-16); }
.mb-2  { margin-bottom: var(--sp-2); }
.mb-4  { margin-bottom: var(--sp-4); }
.mb-6  { margin-bottom: var(--sp-6); }
.mb-8  { margin-bottom: var(--sp-8); }
.mb-12 { margin-bottom: var(--sp-12); }

/* ============================================================
   BACKGROUND UTILITIES
   ============================================================ */
.bg-navy   { background-color: var(--navy); }
.bg-gold   { background-color: var(--gold); }
.bg-surface { background-color: var(--surface); }
.bg-white  { background-color: var(--white); }

/* ============================================================
   DISPLAY UTILITIES
   ============================================================ */
.hidden { display: none !important; }
.block  { display: block; }
.inline-block { display: inline-block; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.overflow-hidden { overflow: hidden; }
.w-full { width: 100%; }
.h-full { height: 100%; }

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--surface-dark), transparent);
  border: none;
  margin: var(--sp-8) 0;
}

.divider-gold {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb {
  background: var(--gold-dark);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: var(--gold-light);
  color: var(--navy);
}

/* ============================================================
   FOCUS
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */
@media (max-width: 1024px) {
  .container { padding-left: var(--sp-5); padding-right: var(--sp-5); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }
  .container { padding-left: var(--sp-4); padding-right: var(--sp-4); }
  .section { padding-top: var(--sp-12); padding-bottom: var(--sp-12); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  .container { padding-left: var(--sp-4); padding-right: var(--sp-4); }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-fade-in     { animation: fadeIn var(--dur-slow) var(--ease-out) both; }
.animate-fade-in-up  { animation: fadeInUp var(--dur-slow) var(--ease-out) both; }
.animate-scale-in    { animation: scaleIn var(--dur-base) var(--ease-out) both; }

/* Staggered children */
.stagger-children > * {
  animation: fadeInUp var(--dur-slow) var(--ease-out) both;
}
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 80ms; }
.stagger-children > *:nth-child(3) { animation-delay: 160ms; }
.stagger-children > *:nth-child(4) { animation-delay: 240ms; }
.stagger-children > *:nth-child(5) { animation-delay: 320ms; }
.stagger-children > *:nth-child(6) { animation-delay: 400ms; }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--surface-dark) 25%, var(--white) 50%, var(--surface-dark) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}