/* Skytree Travels design system: tokens, typography, colors, reset, and layout primitives. */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  color-scheme: light;

  /* ─── Skytree Travels Brand Palette ─── */
  --primary: #052E44;           /* Deep Luxury Navy / Marine */
  --primary-dark: #031E2D;      /* Midnight Navy */
  --primary-light: #0B4B6E;     /* Medium Navy */
  --secondary: #1679B2;         /* Vibrant Sky Blue / Travel Cyan */
  --secondary-light: #75C2EE;   /* Light Sky Blue */
  --secondary-bg: #E8F4FA;      /* Subtle Sky Tint */
  --accent: #FF5A36;            /* High-conversion Coral / Tangerine CTA */
  --accent-dark: #E04826;       /* Deep Tangerine */
  --accent-light: #FFF0ED;      /* Soft Coral Tint */
  --success: #1FA971;           /* Travel Green */
  --warning: #F59E0B;           /* Star Rating Gold */
  --error: #EF4444;             /* Alert Red */
  --dark: #052E44;              /* Deep Navy Dark */
  --text: #1E293B;              /* Slate 800 */
  --text-soft: #334155;         /* Slate 700 */
  --muted: #64748B;             /* Slate 500 */
  --light: #F8FAFC;             /* Clean Soft Background */
  --surface-alt: #F1F6F9;       /* Section Alt Background */
  --white: #FFFFFF;
  --border: #E2E8F0;
  --border-light: #EDF2F7;
  --surface: #FFFFFF;
  --surface-raised: #FFFFFF;

  /* ─── Admin palette ─── */
  --admin-bg: #F4F7FA;
  --admin-surface: #FFFFFF;
  --admin-sidebar: #052E44;
  --admin-text: #1E293B;
  --admin-muted: #64748B;
  --admin-border: #E2E8F0;
  --admin-primary: #1679B2;
  --admin-hover: #E8F4FA;
  --admin-dark-bg: #031E2D;
  --admin-dark-surface: #052E44;
  --admin-dark-sidebar: #02141F;
  --admin-dark-text: #F1F5F9;
  --admin-dark-muted: #94A3B8;
  --admin-dark-border: #1E3A4B;
  --admin-dark-hover: #0E3C56;

  /* ─── Chat palette ─── */
  --chat-primary: #1679B2;
  --chat-primary-hover: #052E44;
  --chat-bg: #F8FAFC;
  --chat-surface: #FFFFFF;
  --chat-outgoing: #E8F4FA;
  --chat-incoming: #FFFFFF;
  --chat-text: #1E293B;
  --chat-muted: #64748B;
  --chat-border: #E2E8F0;

  /* ─── Notifications ─── */
  --notification-info: #1679B2;
  --notification-success: #1FA971;
  --notification-warning: #F59E0B;
  --notification-error: #EF4444;
  --notification-unread: #E8F4FA;

  /* ─── Gradients (Skytree Travels Signature) ─── */
  --gradient-brand: linear-gradient(135deg, #052E44 0%, #0B4B6E 100%);
  --gradient-blue: linear-gradient(135deg, #1679B2 0%, #009FE3 100%);
  --gradient-accent: linear-gradient(135deg, #FF5A36 0%, #FF7E5F 100%);
  --gradient-hero: linear-gradient(180deg, rgba(5, 46, 68, 0.45) 0%, rgba(5, 46, 68, 0.72) 100%);
  --gradient-card: linear-gradient(180deg, transparent 40%, rgba(5, 46, 68, 0.88) 100%);
  --gradient-cta: linear-gradient(135deg, #052E44 0%, #0B4B6E 55%, #1679B2 100%);
  --gradient-dark: linear-gradient(180deg, #031E2D 0%, #052E44 100%);

  /* ─── Glass / blur ─── */
  --glass-blur: 16px;
  --glass-header-bg: rgba(255, 255, 255, 0.96);
  --glass-header-border: #EAEFF4;
  --glass-search-bg: #FFFFFF;
  --glass-search-border: #E2E8F0;
  --glass-dark-bg: rgba(5, 46, 68, 0.85);
  --glass-dark-border: rgba(255, 255, 255, 0.16);

  /* ─── Typography (Outfit & Plus Jakarta Sans) ─── */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Outfit', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-xs: clamp(.75rem, .72rem + .12vw, .8125rem);
  --text-sm: clamp(.875rem, .84rem + .16vw, .9375rem);
  --text-base: clamp(1rem, .96rem + .18vw, 1.0625rem);
  --text-lg: clamp(1.15rem, 1.05rem + .4vw, 1.4rem);
  --text-xl: clamp(1.4rem, 1.2rem + 1vw, 2.1rem);
  --text-display: clamp(2.6rem, 1.8rem + 4.5vw, 5.2rem);

  /* ─── Spacing ─── */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* ─── Layout ─── */
  --container: 1220px;
  --header-height: 78px;

  /* ─── Border radius (Modern Skytree Travels style) ─── */
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* ─── Shadows ─── */
  --shadow-sm: 0 2px 8px rgba(5, 46, 68, 0.04);
  --shadow: 0 8px 24px rgba(5, 46, 68, 0.07);
  --shadow-lg: 0 20px 48px rgba(5, 46, 68, 0.12);
  --shadow-card: 0 4px 20px rgba(5, 46, 68, 0.06);
  --shadow-elevated: 0 16px 45px rgba(5, 46, 68, 0.14);
  --shadow-glow: 0 8px 28px rgba(22, 121, 178, 0.35);
  --shadow-orange: 0 8px 28px rgba(255, 90, 54, 0.35);

  /* ─── Focus ─── */
  --focus: 0 0 0 3px rgba(22, 121, 178, 0.25);

  /* ─── Easing ─── */
  --ease-standard: cubic-bezier(.2, .75, .25, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --duration-fast: 150ms;
  --duration-standard: 250ms;
  --duration-slow: 400ms;

  /* ─── Z-index layers ─── */
  --z-content: 1;
  --z-header: 1000;
  --z-floating: 1100;
  --z-drawer: 1200;
  --z-overlay: 1300;
  --z-toast: 1400;
  --z-modal: 2000;

  /* Signature topographic motif for hero / CTA dark surfaces */
  --topographic-pattern: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 240' fill='none'%3E%3Cg stroke='%23fff' stroke-opacity='.07' stroke-width='1'%3E%3Cpath d='M-30 36C22 4 72 4 112 35s83 42 132 8 70-40 108-16M-34 58C18 26 70 26 111 57s84 42 133 8 69-40 106-16M-34 80C18 48 70 48 111 79s84 42 133 8 69-40 106-16M-30 102C22 70 72 70 112 101s83 42 132 8 70-40 108-16M-34 146c52-32 104-32 145-1s84 42 133 8 69-40 106-16M-30 168c52-32 102-32 142-1s83 42 132 8 70-40 108-16M-30 190c52-32 102-32 142-1s83 42 132 8 70-40 108-16M-30 212c52-32 102-32 142-1s83 42 132 8 70-40 108-16'/%3E%3C/g%3E%3C/svg%3E");
}

/* Admin dark theme override */
.theme-dark {
  color-scheme: dark;
  --admin-bg: var(--admin-dark-bg);
  --admin-surface: var(--admin-dark-surface);
  --admin-sidebar: var(--admin-dark-sidebar);
  --admin-text: var(--admin-dark-text);
  --admin-muted: var(--admin-dark-muted);
  --admin-border: var(--admin-dark-border);
  --admin-hover: var(--admin-dark-hover);
}

/* ─── Reset ──────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
}

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

img {
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

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

:focus-visible {
  outline: 0;
  box-shadow: var(--focus);
  border-radius: 4px;
}

/* ─── Headings (Skytree Travels Typography) ─────────────────────────────── */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 .5em;
  color: var(--primary);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.02em;
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -.035em;
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  letter-spacing: -.025em;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  letter-spacing: -.015em;
}

p {
  margin: 0 0 1rem;
}

ul,
ol {
  margin: 0;
  padding-left: 1.25rem;
}

address {
  font-style: normal;
}

/* ─── Layout helpers ──────────────────────────────────────────────────── */
.container {
  width: min(calc(100% - 2.5rem), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3.5rem, 6.5vw, 6rem);
}

.section--soft {
  background: var(--light);
}

.section--alt {
  background: var(--surface-alt);
}

.section--dark {
  background: var(--primary);
  color: rgba(255, 255, 255, .9);
}

.section--primary {
  background: var(--primary);
  color: #fff;
}

.section__heading {
  max-width: 760px;
  margin: 0 auto 2.8rem;
  text-align: center;
}

.section__heading h2 {
  color: var(--primary);
}

.section__heading p {
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.7;
}

/* ─── Eyebrow / Badges (Skytree Travels Cyan Accent) ────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-bottom: .75rem;
  padding: .35rem .85rem;
  border-radius: var(--radius-pill);
  background: var(--secondary-bg);
  color: var(--secondary);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.section--dark .eyebrow {
  background: rgba(117, 194, 238, 0.15);
  color: var(--secondary-light);
}

/* ─── Accessibility ────────────────────────────────────────────────────── */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: .5rem;
  left: .5rem;
  transform: translateY(-150%);
  padding: .7rem 1.2rem;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

[hidden] {
  display: none !important;
}

::selection {
  background: rgba(22, 121, 178, 0.18);
  color: var(--primary);
}

/* ─── Topographic Surface Motif ─────────────────────────────────────────── */
.topographic-surface {
  background-image: var(--topographic-pattern);
  background-position: center;
  background-size: 320px 240px;
}

/* ─── Reduced motion ──────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}