/* ── Base reset + body + utilities ────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  background: var(--surface-page);
  color: var(--ink-50);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  text-rendering: optimizeLegibility;
}
body {
  background:
    radial-gradient(1100px 600px at 80% -100px, var(--brand-glow), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(60,80,180,0.06), transparent 60%),
    var(--surface-page);
  min-height: 100vh;
  color: var(--ink-100);
}
[data-theme="light"] body {
  background:
    radial-gradient(1200px 600px at 80% -150px, rgba(245,158,11,0.10), transparent 60%),
    var(--surface-page);
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-700); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-600); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: var(--ink-700); }

/* Selection */
::selection { background: var(--brand-glow-strong); color: var(--ink-0); }

button { font-family: inherit; }
button, input, select, textarea {
  color: inherit;
  font-family: inherit;
}
a { color: inherit; }

h1, h2, h3, h4, h5 { margin: 0; color: var(--ink-0); letter-spacing: -0.02em; }

/* Page wrappers */
main { display: block; }
.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 36px 32px 96px;
}
.page-narrow {
  max-width: 1080px;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes flashUp {
  0%   { color: var(--success-400); transform: translateY(2px); }
  60%  { color: var(--success-400); }
  100% { color: var(--ink-0); transform: translateY(0); }
}
.flash-up { animation: flashUp 480ms ease-out; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* Number tabular */
.num-tabular { font-variant-numeric: tabular-nums; }