/* ============================================================
   MERIDIAN — Base · reset, atmosphere, typography, utilities
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html { height: 100%; }

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text-hi);
  font-family: var(--f-ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 600ms var(--e-out), color 600ms var(--e-out);
}

/* ---- Atmosphere: horizon wash under the sky canvas ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(180deg,
      rgba(var(--sky-1), 0.30) 0%,
      rgba(var(--sky-2), 0.14) 34%,
      transparent 62%),
    radial-gradient(120% 60% at 50% 112%,
      rgba(var(--sky-3), 0.35) 0%,
      transparent 60%),
    var(--bg);
  transition: opacity 600ms;
}

/* Fine film grain — barely-there texture */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

:root[data-theme="dusk"] body::after { opacity: 0.05; }

#sky {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
}

/* ---- Links, selection, scrollbars, focus ---- */
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-bright); }

::selection { background: var(--accent-glow); color: var(--text-hi); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--track);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--stroke-hi); background-clip: padding-box; }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

button { font-family: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font-family: inherit; color: inherit; }
img, svg, canvas { display: block; max-width: 100%; }
table { border-collapse: collapse; }
ul, ol { list-style: none; }

/* ============================================================
   Typography roles — Bricolage carries the personality
   ============================================================ */

.display {
  font-family: var(--f-display);
  font-weight: 640;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.h1 { font-family: var(--f-display); font-size: 26px; font-weight: 640; letter-spacing: -0.03em; }
.h2 { font-size: 17.5px; font-weight: 650; letter-spacing: -0.02em; }
.h3 { font-size: 14.5px; font-weight: 620; letter-spacing: -0.01em; }

.eyebrow {
  font-size: 10.5px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.num, .mono {
  font-family: var(--f-mono);
  font-feature-settings: 'tnum' 1, 'zero' 1;
  letter-spacing: -0.02em;
}

.muted { color: var(--text-mid); }
.dim { color: var(--text-dim); }
.small { font-size: 12px; }
.tiny { font-size: 11px; }

.pos { color: var(--profit); }
.neg { color: var(--loss); }
.accent { color: var(--accent); }

/* ============================================================
   Layout utilities
   ============================================================ */

.row { display: flex; align-items: center; gap: 10px; }
.row-sb { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.col { display: flex; flex-direction: column; gap: 10px; }
.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.right { margin-left: auto; }
.center { display: flex; align-items: center; justify-content: center; }

.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.mt-1 { margin-top: 6px; } .mt-2 { margin-top: 12px; } .mt-3 { margin-top: 20px; } .mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 6px; } .mb-2 { margin-bottom: 12px; } .mb-3 { margin-bottom: 20px; }

.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scroll-x { overflow-x: auto; }
.hidden { display: none !important; }

/* ============================================================
   Motion primitives
   ============================================================ */

.rv { opacity: 0; transform: translateY(16px) scale(0.995); }
.rv.in { opacity: 1; transform: none; transition: opacity 650ms var(--e-out), transform 750ms var(--e-out); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  0% { opacity: 0; transform: scale(0.95) translateY(12px); }
  100% { opacity: 1; transform: none; }
}

@keyframes shimmer {
  0% { background-position: -300px 0; }
  100% { background-position: 300px 0; }
}

@keyframes shine {
  from { transform: translateX(-130%) skewX(-18deg); }
  to { transform: translateX(230%) skewX(-18deg); }
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.8); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.04); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .rv { opacity: 1; transform: none; }
}