/* ==========================================================================
   Базовые стили: сброс, типографика, утилиты
   ========================================================================== */

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

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--fs-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.25;
  text-wrap: balance;
  color: var(--text);
}
h1 { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-2xl); letter-spacing: -0.005em; }
h2 { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-xl); }
h3 { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-lg); }
h4 { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-base); }

p { margin: 0; }
p + p { margin-top: 0.6em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

img, svg { max-width: 100%; }

[hidden] { display: none !important; }

hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }

code, kbd {
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
  font-size: 0.86em;
}
kbd {
  padding: 1px 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--text-2);
}

/* Утилиты */
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.muted { color: var(--text-2); }
.faint { color: var(--text-3); }
.small { font-size: var(--fs-sm); }
.xs { font-size: var(--fs-xs); }
.strong { font-weight: 600; }
.right { text-align: right; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.display { font-family: var(--font-display); }
.ok-text { color: var(--ok); }
.warn-text { color: var(--warn); }
.crit-text { color: var(--crit); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.stack { display: flex; flex-direction: column; gap: 16px; }
.stack-sm { display: flex; flex-direction: column; gap: 8px; }
.stack-lg { display: flex; flex-direction: column; gap: 24px; }
.row { display: flex; align-items: center; gap: 12px; }
.row-top { display: flex; align-items: flex-start; gap: 12px; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.grow { flex: 1 1 auto; min-width: 0; }

.grid { display: grid; gap: 16px; }
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; gap: 16px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-main-side { display: grid; gap: 20px; grid-template-columns: minmax(0, 1fr) 340px; align-items: start; }

@media (max-width: 1180px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-main-side { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .grid-2 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}