/* ============================================================
   StarLeads KB — базовые стили: сброс, типографика, утилиты
   ============================================================ */

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

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 650;
  letter-spacing: -0.01em;
}

p {
  overflow-wrap: break-word;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
}

ul {
  padding: 0;
  list-style: none;
}

img, svg {
  display: block;
}

::selection {
  background: var(--primary-soft-strong);
  color: var(--text);
}

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

/* ---------- Скроллбары ---------- */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: content-box;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

/* ---------- Иконки (SVG-спрайт) ---------- */
.icon {
  width: 20px;
  height: 20px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-sm {
  width: 16px;
  height: 16px;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

/* ---------- Клавиши ---------- */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  padding: 3px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  color: var(--text-2);
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
}

mark {
  padding: 0 1px;
  color: var(--mark-text);
  background: var(--mark-bg);
  border-radius: 3px;
}

/* ---------- Утилиты ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}