/* =========================================================================
   artnek.ru — Base styles
   ========================================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  font-weight: 400;
  letter-spacing: -0.005em;
  transition: background-color var(--transition), color var(--transition);
}

img, svg, video { display: block; max-width: 100%; height: auto; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 var(--space-4);
  color: var(--color-text);
}

h1 { font-size: clamp(2.25rem, 4.5vw + 1rem, 4.25rem); letter-spacing: -0.025em; line-height: 1.05; }
h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 3rem); }
h3 { font-size: clamp(1.35rem, 1.4vw + 0.9rem, 1.75rem); }
h4 { font-size: 1.25rem; }

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-primary-hover); }

ul, ol { padding-left: 1.2em; margin: 0 0 var(--space-4); }
li { margin-bottom: var(--space-2); }

hr {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: var(--space-7) 0;
}

::selection { background: var(--color-primary); color: #fff; }

/* layout */
.container {
  width: 100%;
  max-width: var(--content-xwide);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container--default { max-width: var(--content-default); }
.container--narrow  { max-width: var(--content-narrow); }

.section {
  padding: var(--space-10) 0;
}
@media (max-width: 768px) {
  .section { padding: var(--space-8) 0; }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.lead {
  font-size: 1.18rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 56ch;
}

.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }

.section-header {
  margin-bottom: var(--space-7);
  max-width: 68ch;
}

/* skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  z-index: 9999;
}
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

/* focus styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* helpers */
.sr-only {
  position: absolute;
  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) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}