/* ==========================================================================
   PERUN — Base: reset, typography, primitives
   ========================================================================== */

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

html, body { height: 100%; }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  color: var(--text-0);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden; /* app owns its own scroll regions */
  font-feature-settings: "cv11", "ss01", "tnum";
}

/* Ambient storm backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1100px 700px at 82% -8%, hsl(245 90% 40% / 0.20), transparent 60%),
    radial-gradient(900px 600px at 8% 108%, hsl(190 90% 40% / 0.13), transparent 58%),
    radial-gradient(700px 500px at 50% 50%, hsl(260 60% 30% / 0.08), transparent 70%);
  pointer-events: none;
}
:root[data-theme="light"] body::before {
  background:
    radial-gradient(1100px 700px at 82% -8%, hsl(245 90% 70% / 0.16), transparent 60%),
    radial-gradient(900px 600px at 8% 108%, hsl(190 90% 65% / 0.12), transparent 58%);
}

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

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* Numbers align in tables/tickers */
.tnum { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--font-mono); font-feature-settings: "tnum"; }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--bg-3) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--bg-3);
  border-radius: var(--r-full);
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ---- Utility text ------------------------------------------------------- */
.t-up { color: var(--up); }
.t-down { color: var(--down); }
.t-warn { color: var(--warn); }
.t-muted { color: var(--text-2); }
.t-faint { color: var(--text-3); }
.t-brand { color: var(--brand); }

.h1 { font-size: var(--fs-2xl); font-weight: 720; letter-spacing: -0.02em; line-height: var(--lh-tight); }
.h2 { font-size: var(--fs-xl); font-weight: 680; letter-spacing: -0.015em; line-height: var(--lh-tight); }
.h3 { font-size: var(--fs-lg); font-weight: 640; letter-spacing: -0.01em; }
.label {
  font-size: var(--fs-2xs);
  font-weight: 620;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-2);
}

/* ---- App shell layout --------------------------------------------------- */
#app { height: 100dvh; display: flex; flex-direction: column; }

.shell { display: flex; flex: 1; min-height: 0; }

.rail {
  width: var(--rail-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 0;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
  z-index: 20;
}

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.view {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
.view-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 28px 96px;
}

/* Loading / skeleton */
.skel {
  background: linear-gradient(100deg, var(--bg-2) 30%, var(--bg-3) 50%, var(--bg-2) 70%);
  background-size: 200% 100%;
  animation: skel 1.3s var(--ease-in-out) infinite;
  border-radius: var(--r-sm);
}
@keyframes skel { to { background-position: -200% 0; } }

.spin { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.fade-up { animation: fade-up var(--dur-3) var(--ease) both; }

/* Responsive: collapse rail to bottom nav on mobile */
@media (max-width: 720px) {
  .shell { flex-direction: column-reverse; }
  .rail {
    width: 100%;
    flex-direction: row;
    justify-content: space-around;
    padding: 6px 4px;
    border-right: none;
    border-top: 1px solid var(--line);
    background: var(--glass);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
  }
  .rail .rail-logo, .rail .rail-spacer { display: none; }
  .view-inner { padding: 16px 14px 40px; }
}