/* VibeTrip Agent - Core Design System & Dark Travel Experience */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,400;1,500&family=Plus+Jakarta+Sans:wght@500;600;700&display=swap');

:root {
  /* Sophisticated Dark Travel Theme */
  --color-bg: #080D16;               /* Main deep dark background */
  --color-bg-alt: #0D1522;           /* Secondary dark surface */
  --color-surface: #121E2D;          /* Elevated surface */
  --color-surface-elevated: #182638; /* Secondary surface / hover */
  --color-surface-muted: #0B131F;
  --color-surface-hover: #1C2D42;
  
  --color-text: #F2F6FC;             /* Primary text */
  --color-text-secondary: #A4B2C4;   /* Secondary text */
  --color-text-muted: #74849A;       /* Muted text */
  --color-text-light: #526074;
  
  /* Travel Luminous Accents */
  --color-accent: #42D9C8;           /* Primary luminous teal / cyan */
  --color-accent-hover: #5DF0DF;
  --color-accent-light: rgba(66, 217, 200, 0.12);
  --color-accent-border: rgba(66, 217, 200, 0.32);
  --color-accent-glow: rgba(66, 217, 200, 0.22);
  
  --color-secondary-accent: #6EA8FE; /* Cool navigation blue */
  --color-secondary-light: rgba(110, 168, 254, 0.12);
  --color-secondary-border: rgba(110, 168, 254, 0.30);

  --color-border: rgba(148, 174, 205, 0.16);
  --color-border-subtle: rgba(148, 174, 205, 0.10);
  --color-border-hover: rgba(66, 217, 200, 0.38);
  
  /* Status Colors */
  --color-success: #34D399;
  --color-success-bg: rgba(52, 211, 153, 0.12);
  --color-warning: #FBBF24;
  --color-warning-bg: rgba(251, 191, 36, 0.12);
  --color-error: #F87171;
  --color-error-bg: rgba(248, 113, 113, 0.12);
  --color-info: #60A5FA;
  --color-info-bg: rgba(96, 165, 250, 0.12);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font-sans);

  /* Elevation Shadows */
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 10px 32px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 20px 54px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 25px rgba(66, 217, 200, 0.22);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 74px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  position: relative;
  overflow-x: hidden;
}

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

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}

/* Navigation Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(8, 13, 22, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: opacity var(--transition);
}

.brand-logo:hover {
  opacity: 0.9;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: 1.48rem;
  letter-spacing: -0.03em;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
}

.brand-wordmark .wordmark-vibe {
  font-weight: 700;
  color: #F2F6FC;
}

.brand-wordmark .wordmark-trip {
  font-weight: 600;
  color: var(--color-accent);
  text-shadow: 0 0 16px rgba(66, 217, 200, 0.4);
}

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

.nav-link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-text);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
}

.nav-cta-btn:hover {
  background-color: var(--color-accent);
  color: #080D16;
  border-color: var(--color-accent);
  box-shadow: 0 0 18px rgba(66, 217, 200, 0.35);
  transform: translateY(-1px);
}

/* Results Page Navbar */
.navbar-results .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-results .nav-actions {
  margin-left: auto;
}

/* ==========================================================================
   Hero Section — Interactive Digital Travel Map Environment
   ========================================================================== */
.hero-section {
  padding: 80px 0 72px;
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg);
  min-height: 580px;
  display: flex;
  align-items: center;
}

/* Dynamic Interactive Route Background */
.travel-network-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

/* Coordinate Grid Pattern */
.travel-grid-pattern {
  position: absolute;
  inset: 0;
  background-size: 60px 60px;
  background-image: 
    linear-gradient(to right, rgba(110, 168, 254, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(110, 168, 254, 0.04) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.85) 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.85) 0%, transparent 75%);
}

/* Cursor-Reactive Lighting Layer */
.cursor-glow-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    700px circle at var(--mouse-x, 50%) var(--mouse-y, 40%),
    rgba(66, 217, 200, 0.08) 0%,
    rgba(110, 168, 254, 0.04) 40%,
    transparent 75%
  );
  transition: opacity 0.3s ease;
  z-index: 1;
}

/* Abstract Flight Route Lines & Waypoint Nodes */
.route-network-svg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1400px;
  height: 100%;
  pointer-events: none;
  opacity: 0.65;
}

.route-arc {
  fill: none;
  stroke: url(#routeTealGrad);
  stroke-width: 1.5;
  stroke-dasharray: 6 12;
  animation: routeDashPulse 28s linear infinite;
}

.route-arc-alt {
  fill: none;
  stroke: url(#routeBlueGrad);
  stroke-width: 1.2;
  stroke-dasharray: 4 10;
  animation: routeDashPulseReverse 32s linear infinite;
}

@keyframes routeDashPulse {
  to { stroke-dashoffset: -400; }
}

@keyframes routeDashPulseReverse {
  to { stroke-dashoffset: 400; }
}

.waypoint-node {
  fill: var(--color-accent);
  filter: drop-shadow(0 0 6px var(--color-accent));
  animation: nodeGlow 3s ease-in-out infinite alternate;
}

.waypoint-ping {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1;
  animation: pingPulse 4s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes nodeGlow {
  0% { opacity: 0.55; transform: scale(0.95); }
  100% { opacity: 1; transform: scale(1.15); }
}

@keyframes pingPulse {
  0% { r: 4; opacity: 0.8; }
  100% { r: 24; opacity: 0; }
}

.waypoint-label {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  fill: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* Centered Travel Planner Hero Content */
.hero-content-center {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: rgba(66, 217, 200, 0.08);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-accent);
  margin-bottom: 24px;
  box-shadow: 0 0 16px rgba(66, 217, 200, 0.12);
}

.hero-kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5.2vw, 4.2rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: 22px;
}

.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
  text-shadow: 0 0 20px rgba(66, 217, 200, 0.28);
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Telemetry & Assurance Bar */
.hero-telemetry-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 16px 28px;
  background-color: rgba(18, 30, 45, 0.65);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  max-width: fit-content;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.telemetry-label {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.telemetry-val {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.telemetry-separator {
  width: 1px;
  height: 24px;
  background-color: var(--color-border);
}

/* Cached Itinerary Resume Banner */
.cached-trip-banner {
  margin: 0 auto 28px;
  padding: 12px 20px;
  background-color: rgba(66, 217, 200, 0.08);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--color-text);
  box-shadow: 0 0 20px rgba(66, 217, 200, 0.15);
}

.cached-trip-badge {
  background-color: var(--color-accent);
  color: #080D16;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}


/* ==========================================================================
   Editorial Below-the-Fold Sections
   ========================================================================== */
.editorial-section {
  padding: 88px 0;
  position: relative;
}

.editorial-section-alt {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}

.section-kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

/* Methodology Grid */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.philosophy-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.philosophy-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.card-step-num {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.philosophy-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.philosophy-card p {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  flex: 1;
}

/* Experience Archetypes Grid */
.curation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.curation-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  transition: var(--transition);
  position: relative;
}

.curation-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.curation-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.curation-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.curation-card p {
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}

.curation-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.curation-tag {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.curation-cta-banner {
  margin-top: 54px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-sm);
}

.curation-cta-banner h4 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  color: var(--color-text);
  margin-bottom: 6px;
}

.curation-cta-banner p {
  color: var(--color-text-secondary);
  font-size: 0.96rem;
}

/* ==========================================================================
   Motion Design & Reveal Animations
   ========================================================================== */
@keyframes heroFadeUp {
  0% {
    opacity: 0;
    transform: translateY(14px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content-center {
  animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Scroll reveal utility */
.reveal-on-scroll {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-reveal-active .reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.js-reveal-active .reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
  
  .hero-content-center, .reveal-on-scroll {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  margin-top: auto;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 36px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.footer-brand p {
  max-width: 340px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-tech {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-col h5 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  font-size: 0.86rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.footer-bottom {
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--color-text-light);
  flex-wrap: wrap;
  gap: 12px;
}