/* =============================================================
   TINY-HUB · ATMOSPHERE
   Shared design tokens, typography, atmospheric background,
   navigation, measurement cards, generic card chrome.
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;800;900&family=JetBrains+Mono:wght@400;500;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Typography */
  --font-display: 'Orbitron', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Inter', sans-serif;

  /* Sun (primary accent — amber/gold) */
  --sun-1: #ffcc00;
  --sun-2: #ff9500;
  --sun-3: rgba(255, 149, 0, 0.45);

  /* Amber alias (glossary uses these names) */
  --amber-1: #ffcc00;
  --amber-2: #ff9500;

  /* Cyan (secondary accent) */
  --cyan: #00f0ff;
  --cyan-dim: rgba(0, 240, 255, 0.45);

  /* Status accents */
  --magenta: #ff2d95;
  --green-live: #00ff88;

  /* Ink (text) */
  --ink: #e6f8ff;
  --ink-body: #cdd8db;
  --ink-dim: #7ba9b3;

  /* Surfaces */
  --bg: #050810;
  --panel: rgba(5, 8, 14, 0.72);
  --panel-solid: #050810;

  /* Hairlines */
  --hair-cyan-2: rgba(0, 240, 255, 0.18);
  --hair-sun-2: rgba(255, 149, 0, 0.22);
}

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

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--ink-body);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* ----------- Atmosphere (background layers) ----------- */
.atmos {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.atmos__stars {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.6), transparent 50%),
    radial-gradient(1px 1px at 60% 70%, rgba(0,240,255,0.5), transparent 50%),
    radial-gradient(1px 1px at 85% 20%, rgba(255,255,255,0.4), transparent 50%),
    radial-gradient(1px 1px at 35% 85%, rgba(255,204,0,0.3), transparent 50%),
    radial-gradient(1px 1px at 75% 50%, rgba(255,255,255,0.5), transparent 50%),
    radial-gradient(1px 1px at 10% 60%, rgba(0,240,255,0.3), transparent 50%),
    radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.4), transparent 50%);
  background-size: 800px 800px;
  opacity: 0.7;
  animation: drift 240s linear infinite;
}

.atmos__horizon {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 50vh;
  background:
    radial-gradient(ellipse 80% 60% at 50% 100%,
      rgba(255, 149, 0, 0.18) 0%,
      rgba(255, 45, 149, 0.08) 25%,
      transparent 70%),
    linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.04) 100%);
}

.atmos__grid {
  position: absolute;
  bottom: 0; left: -10%; right: -10%;
  height: 40vh;
  background-image:
    linear-gradient(0deg, rgba(0,240,255,0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,240,255,0.10) 1px, transparent 1px);
  background-size: 60px 30px;
  transform: perspective(700px) rotateX(60deg);
  transform-origin: 50% 100%;
  mask-image: linear-gradient(0deg, #000 0%, #000 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(0deg, #000 0%, #000 50%, transparent 100%);
  opacity: 0.55;
}

@keyframes drift {
  0%   { background-position: 0 0; }
  100% { background-position: 800px 800px; }
}

/* ----------- Page container helpers ----------- */
main, .page { position: relative; z-index: 1; }

/* ----------- Navigation ----------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.85rem 1.6rem;
  background: rgba(5, 8, 14, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hair-cyan-2);
}

.nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  color: var(--sun-1);
  text-shadow: 0 0 8px var(--sun-2), 0 0 18px var(--sun-3);
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: 0.4rem;
  margin-left: 0.5rem;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 0.45rem 0.8rem;
  border: 1px solid transparent;
  transition: all 0.18s ease;
}

.nav__link:hover {
  color: var(--cyan);
  border-color: var(--hair-cyan-2);
  background: rgba(0, 240, 255, 0.04);
}

.nav__link.is-active {
  color: var(--sun-1);
  border-color: var(--hair-sun-2);
  background: rgba(255, 149, 0, 0.06);
  text-shadow: 0 0 6px var(--sun-3);
}

.nav__spacer { flex: 1; }

/* Flicker (used on the brand) */
.flicker { animation: flicker 5s steps(2, end) infinite; }
@keyframes flicker {
  0%, 92%, 100% { opacity: 1; }
  93% { opacity: 0.55; }
  94% { opacity: 1; }
  96% { opacity: 0.7; }
  97% { opacity: 1; }
}

/* ----------- Measurement card (.ms) ----------- */
.ms {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--hair-cyan-2);
  background: rgba(5, 8, 14, 0.55);
  position: relative;
}

.ms::before, .ms::after {
  content: ''; position: absolute;
  width: 8px; height: 8px;
  border: 1.5px solid var(--sun-2);
  pointer-events: none;
}
.ms::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.ms::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.ms__lbl {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.ms__val {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  color: var(--sun-1);
  text-shadow: 0 0 6px var(--sun-2);
  line-height: 1;
}
.ms__val.cyan { color: var(--cyan); text-shadow: 0 0 6px var(--cyan-dim); }
.ms__val.good { color: var(--green-live); text-shadow: 0 0 6px var(--green-live); }
.ms__val.bad  { color: var(--magenta); text-shadow: 0 0 6px var(--magenta); }

.ms__unit {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
  letter-spacing: 0.15em;
  margin-left: 0.3rem;
  font-weight: 500;
}

/* ----------- Card ----------- */
.card {
  border: 1px solid var(--hair-cyan-2);
  background: var(--panel);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px dashed rgba(0, 240, 255, 0.12);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--sun-1);
  text-transform: uppercase;
  text-shadow: 0 0 5px var(--sun-3);
}
.card__title.cyan { color: var(--cyan); text-shadow: 0 0 5px var(--cyan-dim); }
.card__title.mag  { color: var(--magenta); text-shadow: 0 0 5px var(--magenta); }

.card__sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-top: 0.2rem;
}

/* ----------- Pill ----------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--hair-cyan-2);
  color: var(--ink-dim);
  background: rgba(0, 240, 255, 0.04);
}

.pill--live { color: var(--green-live); border-color: rgba(0, 255, 136, 0.3); background: rgba(0, 255, 136, 0.06); }
.pill--live::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--green-live); box-shadow: 0 0 6px var(--green-live);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.85); }
}

/* ----------- Utility text colors ----------- */
.cyan { color: var(--cyan); }
.sun  { color: var(--sun-1); }
.mag  { color: var(--magenta); }
.good { color: var(--green-live); }
.dim  { color: var(--ink-dim); }