/*
  Vaskodigama design tokens.
  Blue-led, calm, evidence-first. All colours are tuned for WCAG 2.2 AA
  contrast on white / off-white surfaces.
*/

:root {
  /* Surfaces */
  --background: #ffffff;
  --surface: #f4f8fc; /* soft ice section background */
  --surface-2: #e8f0fa; /* subtle raised panels */
  --foreground: #122033; /* main text on white */

  /* Brand blues */
  --primary: #146ef5; /* primary intelligence blue */
  --primary-hover: #0f57c8;
  --primary-foreground: #ffffff;
  --primary-soft: #e4effe; /* selected states / subtle highlights */
  --primary-soft-foreground: #0f4aa8; /* AA-contrast text on soft */

  --navy: #0d2c44; /* ocean navy headings / dark surfaces */
  --navy-deep: #071a2b; /* deep navigation navy (hero) */

  /* Neutrals */
  --muted: #607087; /* secondary text */
  --muted-strong: #3c4b5f;
  --border: #dce6f0; /* soft blue-grey borders */
  --border-strong: #c3cfe0;
  --ring: #146ef5;

  /* Status — AA-tuned variants of the brand status hues */
  --success: #157a4d;
  --success-soft: #e3f4ea;
  --warning: #9a5b06;
  --warning-soft: #fbf0dd;
  --danger: #c0362c;
  --danger-soft: #fbe7e5;
  --info: #146ef5;
  --info-soft: #e4effe;

  /* Chart palette — blue-led, colour-blind aware */
  --chart-1: #146ef5; /* primary blue */
  --chart-2: #1cc8d7; /* data cyan */
  --chart-3: #2d8cff; /* bright route blue */
  --chart-4: #0d2c44; /* ocean navy */
  --chart-5: #d98b20; /* amber accent */
  --chart-6: #1b9c68; /* positive green */

  /* Radius */
  --radius-sm: 0.375rem;
  --radius: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;

  /* Shadows — subtle, professional */
  --shadow-xs: 0 1px 2px rgba(11, 39, 74, 0.06);
  --shadow-sm: 0 1px 3px rgba(11, 39, 74, 0.08), 0 1px 2px rgba(11, 39, 74, 0.04);
  --shadow-md: 0 6px 16px rgba(11, 39, 74, 0.08), 0 2px 6px rgba(11, 39, 74, 0.05);
  --shadow-lg: 0 18px 40px rgba(11, 39, 74, 0.12);

  /* Motion */
  --duration-fast: 120ms;
  --duration: 200ms;
  --duration-slow: 360ms;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-heading: "Manrope", "Inter", ui-sans-serif, sans-serif;
}

* {
  border-color: var(--border);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  color: var(--navy);
  letter-spacing: -0.02em;
}

/* Standard site-wide section padding & full-height section layout */
.site-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}
@media (min-width: 640px) {
  .site-section {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }
}
@media (min-width: 1024px) {
  .site-section {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
}
@media (min-width: 1536px) {
  .site-section {
    padding-top: 5.5rem;
    padding-bottom: 5.5rem;
  }
}

/* Standard site-wide page container */
.site-container {
  width: 100%;
  max-width: 80rem;
  margin-top: auto;
  margin-bottom: auto;
  margin-left: auto;
  margin-right: auto;
}
/* @media (min-width: 640px) {
  .site-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}
@media (min-width: 1024px) {
  .site-container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}
@media (min-width: 1536px) {
  .site-container {
    max-width: 1550px;
  }
} */


/* Visible, consistent focus ring for keyboard users */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--primary);
  color: var(--primary-foreground);
  padding: 0.625rem 1rem;
  border-radius: 0 0 var(--radius) 0;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
}

/* Honour reduced-motion preference globally */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Thin, calm scrollbars for horizontally scrolling tables */
.scroll-x {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

/* Utility: subtle dotted grid used behind hero/preview blocks */
.bg-grid {
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* Deep-navy hero surface: navy gradient with restrained blue/cyan glows. */
.surface-hero {
  background-color: var(--navy-deep);
  background-image:
    radial-gradient(60% 80% at 18% 12%, rgba(20, 110, 245, 0.28), transparent 60%),
    radial-gradient(50% 70% at 88% 18%, rgba(28, 200, 215, 0.16), transparent 60%),
    linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
}

/* Faint route-grid overlay for dark hero sections (decorative). */
.bg-route-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
}

/* Blue→cyan gradient text for display headings. */
.text-gradient {
  color: var(--primary);
  background-image: linear-gradient(100deg, var(--primary) 0%, #2d8cff 45%, var(--chart-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.text-gradient-light {
  color: #bfe0ff;
  background-image: linear-gradient(100deg, #2d8cff 0%, #1cc8d7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Light, vibrant hero/header surface — replaces the heavy dark navy. */
.surface-hero-light {
  background-color: var(--surface);
  background-image:
    radial-gradient(48% 60% at 10% 0%, rgba(20, 110, 245, 0.14), transparent 62%),
    radial-gradient(44% 56% at 92% 4%, rgba(28, 200, 215, 0.16), transparent 60%),
    radial-gradient(60% 70% at 78% 110%, rgba(45, 140, 255, 0.10), transparent 64%),
    linear-gradient(180deg, #ffffff 0%, var(--surface) 100%);
}
/* Faint blue route grid for light surfaces. */
.bg-route-grid-light {
  background-image:
    linear-gradient(rgba(20, 110, 245, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 110, 245, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
}

/* Market sparkline (Top markets). */
.spark-line { stroke-dasharray: 1; stroke-dashoffset: 1; }
.spark-line-in {
  animation: spark-draw 0.7s var(--ease) forwards;
  animation-delay: var(--spark-delay, 0s);
}
@keyframes spark-draw { to { stroke-dashoffset: 0; } }
.spark-area,
.spark-end { opacity: 0; }
.spark-area-in {
  animation: spark-fade 0.6s var(--ease) forwards;
  animation-delay: var(--spark-delay, 0s);
}
.spark-end-in {
  animation: spark-fade 0.3s var(--ease) forwards;
  animation-delay: calc(var(--spark-delay, 0s) + 0.55s);
}
@keyframes spark-fade { to { opacity: 1; } }
.spark-pulse-in {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: spark-pulse 0.9s ease-out 1 both;
  animation-delay: calc(var(--spark-delay, 0s) + 0.65s);
}
@keyframes spark-pulse {
  0% { opacity: 0.5; transform: scale(0.5); }
  100% { opacity: 0; transform: scale(2.4); }
}

/* Scroll-reveal entrance. */
@keyframes vdg-fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
.reveal-init { opacity: 0; }
.reveal-in { animation: vdg-fade-up 0.6s var(--ease) both; }

/* Gradient primary action. */
.btn-gradient {
  background-image: linear-gradient(120deg, var(--primary) 0%, #2d8cff 60%, var(--chart-2) 130%);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(20, 110, 245, 0.6);
  transition: filter var(--duration) var(--ease), transform var(--duration) var(--ease);
}
.btn-gradient:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

/* Richer aurora hero surface. */
.surface-aurora {
  background-color: var(--navy-deep);
  background-image:
    radial-gradient(48% 60% at 12% 6%, rgba(45, 140, 255, 0.42), transparent 62%),
    radial-gradient(42% 56% at 88% 4%, rgba(28, 200, 215, 0.30), transparent 60%),
    radial-gradient(60% 70% at 70% 100%, rgba(20, 110, 245, 0.30), transparent 64%),
    linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
}

/* Soft tinted feature tiles. */
.tile-glow {
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}
.tile-glow:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

/* Thin gradient hairline used to top vibrant cards. */
.rule-gradient {
  height: 3px;
  background-image: linear-gradient(90deg, var(--primary), var(--chart-2));
  border-radius: 999px;
}

/* Slow drifting glow for hero accents. */
@keyframes vdg-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.animate-float { animation: vdg-float 6s ease-in-out infinite; }

/* Hero route-line draw + soft node pulse. */
@keyframes vdg-route-draw {
  from { stroke-dashoffset: 340; }
  to { stroke-dashoffset: 0; }
}
.animate-route {
  stroke-dasharray: 340;
  animation: vdg-route-draw 3.2s var(--ease) forwards;
}
@keyframes vdg-node-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}
.animate-node { animation: vdg-node-pulse 2.6s ease-in-out infinite; }