@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Syne:wght@500;700;800&display=swap');

/* ==============================================================
   STARLING QUANTITATIVE // Design System (Tuned to Brand Logo)
   Deep Midnight Navy + Electric Cyan/Teal & Cobalt Accents
   ============================================================== */

:root {
  --bg: #060b14;           /* Deep Midnight Navy Base */
  --ink: #f8fafc;          /* Starlight Crisp White */
  --soft: #cbd5e1;         /* Soft Cloud Slate */
  --muted: #94a3b8;        /* Muted Steel */
  --note: #64748b;         /* Deep Subdued Slate */
  
  --line: #142136;         /* Midnight Hairline Border */
  --line-subtle: #0f1929;  /* Subtle Separator */
  --card: #0a1220;         /* Card Surface */
  --card-hover: #0f1a2e;
  
  /* Brand Accents from Logo */
  --accent-teal: #2ec4b6;   /* Electric Teal / Cyan */
  --accent-blue: #2563eb;   /* Cobalt Arrow Blue */
  --accent-cyan: #00b4d8;   /* Sky Cyan Node */
  --accent-navy: #0f2b59;   /* Deep Brand Navy */
  
  --font-serif: 'Instrument Serif', Georgia, Didot, serif;
  --font-sans: 'Syne', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: 'Space Mono', "JetBrains Mono", Consolas, monospace;

  --ease-smooth: cubic-bezier(0.2, 0.7, 0.1, 1);
}

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

html {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
  position: relative;
}

/* Selection Color */
::selection {
  background: var(--accent-blue);
  color: var(--ink);
}

/* Typography Hierarchy */
.font-editorial {
  font-family: var(--font-serif);
}

.font-display {
  font-family: var(--font-sans);
}

.font-code {
  font-family: var(--font-mono);
}

/* Headings */
.h-hero {
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 700;
  color: var(--ink);
}

.h-xl {
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 600;
  color: var(--ink);
}

.h-lg {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--ink);
}

.lead-text {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.8;
  color: var(--soft);
}

/* Section Grid (cream-u style 2-column layout) */
.sec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: clamp(4rem, 9vw, 8.5rem) 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 900px) {
  .sec-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 4rem;
  }
}

@media (min-width: 1200px) {
  .sec-grid {
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 6rem;
  }
}

/* Sticky Section Labels on Left */
.sec-label-col {
  position: relative;
}

@media (min-width: 900px) {
  .sec-label-col {
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-teal);
}

.sec-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent-teal);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(46, 196, 182, 0.8);
}

/* Card Surfaces */
.surface-card {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: all 0.35s var(--ease-smooth);
}

.surface-card:hover {
  background-color: var(--card-hover);
  border-color: rgba(46, 196, 182, 0.35);
  box-shadow: 0 12px 36px -8px rgba(6, 11, 20, 0.8), 0 0 20px rgba(46, 196, 182, 0.08);
  transform: translateY(-2px);
}

/* Scroll-Driven Reveal Animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s var(--ease-smooth), transform 0.85s var(--ease-smooth);
}

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

/* Buttons */
.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.6rem;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: all 0.3s var(--ease-smooth);
  text-decoration: none;
  cursor: pointer;
}

.btn-pill-primary {
  background: linear-gradient(135deg, #1d4ed8 0%, #0d9488 100%);
  color: #ffffff;
  border: 1px solid rgba(46, 196, 182, 0.4);
  box-shadow: 0 4px 20px rgba(46, 196, 182, 0.25);
}

.btn-pill-primary:hover {
  background: linear-gradient(135deg, #2563eb 0%, #14b8a6 100%);
  border-color: var(--accent-teal);
  box-shadow: 0 6px 28px rgba(46, 196, 182, 0.4);
  transform: scale(1.02);
}

.btn-pill-secondary {
  background-color: rgba(10, 18, 32, 0.6);
  color: var(--ink);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.btn-pill-secondary:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
  background-color: rgba(15, 26, 46, 0.9);
}

/* Background Atmosphere */
.hero-canvas-wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero-canvas-wrap canvas {
  pointer-events: auto;
}

/* ==============================================================
   Radical Transparency Performance Metrics Boxes
   ============================================================== */
.metric-box {
  background: rgba(10, 18, 32, 0.75);
  border: 1px solid rgba(20, 33, 54, 0.95);
  border-radius: 16px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease-smooth);
}

.metric-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(46, 196, 182, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.metric-box:hover {
  background: rgba(15, 26, 46, 0.9);
  border-color: rgba(46, 196, 182, 0.45);
  box-shadow: 0 16px 40px -10px rgba(6, 11, 20, 0.95), 0 0 25px rgba(46, 196, 182, 0.12);
  transform: translateY(-3px);
}

.metric-box:hover::before {
  opacity: 1;
}

.metric-number {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.05;
  font-family: var(--font-sans);
  letter-spacing: -0.03em;
  color: var(--ink);
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@keyframes tradeTickFlash {
  0% { color: #2ec4b6; text-shadow: 0 0 14px rgba(46, 196, 182, 0.9); }
  100% { color: inherit; text-shadow: none; }
}

.trade-tick-animate {
  animation: tradeTickFlash 1.2s ease-out;
}