/* =============================================================
   Bluehex — Glassmorphism Layer
   Extends tokens.css with glass primitives + aurora backgrounds.
   ============================================================= */

:root {
  /* Glass tunables — overridable via Tweaks */
  --glass-opacity: 0.14;        /* fill alpha for light panels */
  --glass-opacity-dark: 0.08;   /* fill alpha for dark panels */
  --glass-blur: 22px;
  --glass-saturate: 180%;
  --glass-border: 1px;
  --glass-border-alpha: 0.35;
  --glass-highlight-alpha: 0.55;
  --glass-shadow: 0 18px 50px -12px rgba(0, 22, 51, 0.35),
                  0 2px 6px rgba(0, 22, 51, 0.12);

  /* Aurora theme (navy/cyan default). Overridden per theme below. */
  --aurora-bg: #020b1f;
  --aurora-bg-soft: #041634;
  --aurora-1: #00a8f0;   /* cyan */
  --aurora-2: #1f68ad;   /* steel blue */
  --aurora-3: #4c2a8a;   /* deep violet */
  --aurora-4: #00d4ff;   /* electric cyan */
  --aurora-5: #082a5e;   /* navy midtone */

  /* Page fg on aurora */
  --page-fg: #eef4ff;
  --page-fg-muted: rgba(238, 244, 255, 0.72);
  --page-fg-subtle: rgba(238, 244, 255, 0.55);

  /* Grain */
  --grain-opacity: 0.06;
}

/* ================ Aurora themes ================ */
[data-aurora="teal-violet"] {
  --aurora-bg: #060420;
  --aurora-bg-soft: #140a36;
  --aurora-1: #2dd4bf;
  --aurora-2: #6d28d9;
  --aurora-3: #ec4899;
  --aurora-4: #22d3ee;
  --aurora-5: #1e1147;
}
[data-aurora="sunset"] {
  --aurora-bg: #1a0820;
  --aurora-bg-soft: #2a0f1a;
  --aurora-1: #ff7a59;
  --aurora-2: #ffb347;
  --aurora-3: #d946ef;
  --aurora-4: #fb7185;
  --aurora-5: #4a1d3f;
}

/* ================ Light mode ================ */
[data-theme="light"] {
  --aurora-bg: #eaf2fb;
  --aurora-bg-soft: #f7fbff;
  --aurora-1: #00a8f0;
  --aurora-2: #7ccff7;
  --aurora-3: #9cbadc;
  --aurora-4: #1f68ad;
  --aurora-5: #cde0ef;
  --page-fg: #0c1521;
  --page-fg-muted: rgba(12, 21, 33, 0.72);
  --page-fg-subtle: rgba(12, 21, 33, 0.55);
  --glass-opacity: 0.55;
  --glass-border-alpha: 0.6;
  --glass-highlight-alpha: 0.85;
  --glass-shadow: 0 18px 50px -14px rgba(0, 48, 104, 0.18),
                  0 2px 6px rgba(0, 48, 104, 0.08);
}
[data-theme="light"][data-aurora="teal-violet"] {
  --aurora-bg: #f2ecff;
  --aurora-bg-soft: #ecf9f7;
  --aurora-1: #14b8a6;
  --aurora-2: #8b5cf6;
  --aurora-3: #f0abfc;
  --aurora-4: #06b6d4;
  --aurora-5: #ddd6fe;
}
[data-theme="light"][data-aurora="sunset"] {
  --aurora-bg: #fff1ea;
  --aurora-bg-soft: #fff7f0;
  --aurora-1: #fb7185;
  --aurora-2: #fbbf24;
  --aurora-3: #e879f9;
  --aurora-4: #fb923c;
  --aurora-5: #fde4e4;
}

/* ================ Base ================ */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--aurora-bg);
  color: var(--page-fg);
  font-family: var(--bh-font-sans);
}

body {
  position: relative;
  overflow-x: hidden;
}

/* On aurora backgrounds, headings take page fg */
h1, h2, h3, h4, h5, h6 { color: var(--page-fg); }

/* Strong display weight for the hero */
.display-xl {
  font-family: var(--bh-font-display);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 0.96;
  font-size: clamp(48px, 7.2vw, 112px);
  text-wrap: balance;
}
.display-lg {
  font-family: var(--bh-font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.02;
  font-size: clamp(36px, 4.4vw, 68px);
}

/* ================ Aurora background ================ */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 110%, var(--aurora-bg-soft), transparent 70%),
    var(--aurora-bg);
}
.aurora::before,
.aurora::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.7;
  will-change: transform;
}
.aurora .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
  mix-blend-mode: screen;
}
[data-theme="light"] .aurora .blob { mix-blend-mode: multiply; opacity: 0.55; }
[data-theme="light"] .aurora::before,
[data-theme="light"] .aurora::after { mix-blend-mode: multiply; opacity: 0.4; }

.aurora .b1 { width: 720px; height: 720px; background: var(--aurora-1); top: -200px; left: -180px;  opacity: 0.65; animation: drift1 26s var(--bh-ease-emphasized) infinite alternate; }
.aurora .b2 { width: 680px; height: 680px; background: var(--aurora-2); top: 20%;   right: -220px; opacity: 0.55; animation: drift2 32s var(--bh-ease-emphasized) infinite alternate; }
.aurora .b3 { width: 640px; height: 640px; background: var(--aurora-3); bottom: -200px; left: 30%; opacity: 0.55; animation: drift3 28s var(--bh-ease-emphasized) infinite alternate; }
.aurora .b4 { width: 520px; height: 520px; background: var(--aurora-4); top: 55%; left: 10%;    opacity: 0.45; animation: drift1 36s var(--bh-ease-emphasized) infinite alternate-reverse; }
.aurora .b5 { width: 420px; height: 420px; background: var(--aurora-5); top: 10%;  left: 45%;    opacity: 0.4;  animation: drift2 22s var(--bh-ease-emphasized) infinite alternate; }

@keyframes drift1 { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(140px, 80px) scale(1.15); } }
@keyframes drift2 { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(-120px, 60px) scale(0.9); } }
@keyframes drift3 { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(80px, -100px) scale(1.1); } }

/* Wave overlay (matches chosen reference background) */
.aurora-waves {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  pointer-events: none;
}

/* Grain */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: var(--grain-opacity);
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
[data-grain="off"] .grain { display: none; }

/* ================ Glass primitives ================ */
.glass {
  position: relative;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, calc(var(--glass-opacity) + 0.08)),
    rgba(255, 255, 255, var(--glass-opacity)) 45%,
    rgba(255, 255, 255, calc(var(--glass-opacity) - 0.04))
  );
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: var(--glass-border) solid rgba(255, 255, 255, var(--glass-border-alpha));
  border-radius: var(--bh-radius-xl);
  box-shadow: var(--glass-shadow),
              inset 0 1px 0 0 rgba(255, 255, 255, var(--glass-highlight-alpha)),
              inset 0 -1px 0 0 rgba(255, 255, 255, 0.06);
  color: var(--page-fg);
}
[data-theme="light"] .glass {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, calc(var(--glass-opacity) + 0.15)),
    rgba(255, 255, 255, var(--glass-opacity)) 50%,
    rgba(255, 255, 255, calc(var(--glass-opacity) - 0.05))
  );
  border-color: rgba(255, 255, 255, 0.9);
}

.glass-dark {
  background: linear-gradient(
    135deg,
    rgba(0, 22, 51, calc(var(--glass-opacity-dark) + 0.18)),
    rgba(0, 22, 51, var(--glass-opacity-dark)) 45%,
    rgba(0, 22, 51, calc(var(--glass-opacity-dark) + 0.10))
  );
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--bh-radius-xl);
  box-shadow: var(--glass-shadow),
              inset 0 1px 0 rgba(255,255,255,0.18);
}

/* Specular highlight — sweep */
.glass-shine::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(
    160deg,
    rgba(255,255,255, var(--glass-highlight-alpha)) 0%,
    rgba(255,255,255,0) 35%,
    rgba(255,255,255,0) 65%,
    rgba(255,255,255,0.08) 100%
  );
  mix-blend-mode: overlay;
  opacity: 0.8;
}

/* Mouse spotlight — add .spotlight to any .glass */
.spotlight {
  --mx: 50%;
  --my: 0%;
}
.spotlight::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(
    260px circle at var(--mx) var(--my),
    rgba(255, 255, 255, 0.22),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 200ms var(--bh-ease-standard);
}
.spotlight:hover::after { opacity: 1; }

/* Tilt card wrapper */
.tilt {
  transform-style: preserve-3d;
  transition: transform 240ms var(--bh-ease-standard);
  will-change: transform;
}

/* ================ Chips, buttons, inputs on glass ================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--page-fg);
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--bh-cyan-500); box-shadow: 0 0 0 4px rgba(0,168,240,0.25); }
[data-theme="light"] .chip { background: rgba(255,255,255,0.7); border-color: rgba(12,21,33,0.08); color: var(--bh-navy-800); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--bh-font-sans);
  font-weight: 600;
  font-size: 15px;
  border-radius: 999px;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 120ms var(--bh-ease-standard),
              box-shadow 200ms var(--bh-ease-standard),
              background 200ms var(--bh-ease-standard);
  letter-spacing: -0.005em;
}
.btn svg { width: 18px; height: 18px; stroke-width: 2; }
.btn-primary {
  background: linear-gradient(180deg, var(--bh-cyan-400) 0%, var(--bh-cyan-600) 100%);
  color: #00223b;
  box-shadow: 0 8px 24px -8px rgba(0, 168, 240, 0.6),
              inset 0 1px 0 rgba(255,255,255,0.5);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 30px -8px rgba(0,168,240,0.7), inset 0 1px 0 rgba(255,255,255,0.5); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255,255,255,0.08);
  color: var(--page-fg);
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.14); }
[data-theme="light"] .btn-ghost { background: rgba(255,255,255,0.7); border-color: rgba(12,21,33,0.1); }
[data-theme="light"] .btn-ghost:hover { background: rgba(255,255,255,0.95); }

.input-glass {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--page-fg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-family: var(--bh-font-sans);
  font-size: 15px;
  width: 100%;
}
.input-glass input, .input-glass textarea {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: inherit;
  font: inherit;
  width: 100%;
  resize: vertical;
}
.input-glass input::placeholder, .input-glass textarea::placeholder { color: var(--page-fg-subtle); }
[data-theme="light"] .input-glass { background: rgba(255,255,255,0.75); border-color: rgba(12,21,33,0.1); }

/* ================ Nav ================ */
.site-nav {
  position: sticky;
  top: 16px;
  z-index: 40;
  margin: 16px auto 0;
  max-width: 1240px;
  padding: 0 24px;
}
.site-nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 10px 14px 10px 22px;
  border-radius: 999px;
}
.site-nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--page-fg);
  text-decoration: none;
}
.site-nav .brand .mark {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
}
.site-nav .brand .hex { color: var(--bh-cyan-400); }
[data-theme="light"] .site-nav .brand .hex { color: var(--bh-cyan-700); }

.site-nav ul { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0 auto 0 8px; padding: 0; }
.site-nav a.link {
  color: var(--page-fg-muted);
  text-decoration: none;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  transition: color 160ms, background 160ms;
}
.site-nav a.link:hover { color: var(--page-fg); background: rgba(255,255,255,0.08); }
.site-nav a.link.active { color: var(--page-fg); background: rgba(255,255,255,0.12); }
[data-theme="light"] .site-nav a.link:hover { background: rgba(12,21,33,0.06); }
[data-theme="light"] .site-nav a.link.active { background: rgba(12,21,33,0.08); }

.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  color: var(--page-fg);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.theme-toggle:hover { background: rgba(255,255,255,0.14); }
[data-theme="light"] .theme-toggle { background: rgba(255,255,255,0.7); border-color: rgba(12,21,33,0.1); }

/* ================ Footer ================ */
.site-footer {
  margin: 120px auto 32px;
  max-width: 1240px;
  padding: 0 24px;
}
.site-footer-inner {
  padding: 48px 48px 32px;
  border-radius: 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}
.site-footer h6 {
  font-family: var(--bh-font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--page-fg-subtle);
  margin-bottom: 14px;
}
.site-footer a {
  display: block;
  padding: 4px 0;
  color: var(--page-fg-muted);
  text-decoration: none;
  font-size: 14px;
}
.site-footer a:hover { color: var(--page-fg); }
.site-footer-meta {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; margin-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: var(--page-fg-subtle);
}
[data-theme="light"] .site-footer-meta { border-color: rgba(12,21,33,0.08); }

/* ================ Container + utility ================ */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 96px 0; position: relative; }
.section-sm { padding: 64px 0; }
.text-accent { color: var(--bh-cyan-400); }
[data-theme="light"] .text-accent { color: var(--bh-cyan-700); }
.text-muted { color: var(--page-fg-muted); }
.text-subtle { color: var(--page-fg-subtle); }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bh-cyan-400);
}
[data-theme="light"] .eyebrow { color: var(--bh-cyan-700); }

/* Reveal-on-scroll — base class has no hidden state; JS adds .rp for animation */
.reveal { opacity: 1; transform: none; }
.rp { opacity: 0; transform: translateY(18px); transition: opacity 600ms var(--bh-ease-emphasized), transform 600ms var(--bh-ease-emphasized); }
.rp.in { opacity: 1; transform: none; }

/* ================ Tweaks panel ================ */
.tweaks-panel {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  width: 320px;
  padding: 16px 18px 18px;
  border-radius: 18px;
  display: none;
  color: var(--page-fg);
}
.tweaks-panel.show { display: block; }
.tweaks-panel h6 {
  margin: 0 0 10px;
  font-family: var(--bh-font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--page-fg-subtle);
  display: flex; align-items: center; justify-content: space-between;
}
.tweaks-panel .row { margin-bottom: 12px; }
.tweaks-panel label { display: block; font-size: 12px; color: var(--page-fg-muted); margin-bottom: 6px; }
.tweaks-panel input[type="range"] { width: 100%; accent-color: var(--bh-cyan-500); }
.tweaks-panel .seg {
  display: flex; gap: 4px; padding: 3px;
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.12);
}
.tweaks-panel .seg button {
  flex: 1; padding: 6px 8px;
  border: none; background: transparent;
  color: var(--page-fg-muted);
  font-size: 12px; font-weight: 500;
  border-radius: 8px; cursor: pointer;
}
.tweaks-panel .seg button.on {
  background: rgba(255,255,255,0.16);
  color: var(--page-fg);
}
[data-theme="light"] .tweaks-panel .seg { background: rgba(12,21,33,0.06); border-color: rgba(12,21,33,0.08); }
[data-theme="light"] .tweaks-panel .seg button.on { background: rgba(255,255,255,0.9); color: var(--bh-navy-800); }

/* ================ Scroll fade in for reveals ================ */
@media (prefers-reduced-motion: reduce) {
  .aurora .blob, .aurora::before, .aurora::after { animation: none !important; }
  .rp { opacity: 1 !important; transform: none !important; transition: none !important; }
}