/* ============================================
   Stethiano · Base / Reset
   ============================================ */

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv11", "ss01", "ss03";
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

h1 { font-size: var(--text-5xl); letter-spacing: var(--tracking-tighter); font-weight: 700; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { margin: 0; color: var(--color-text-2); }

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

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

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

input, textarea, select { font: inherit; color: inherit; }

ul, ol { margin: 0; padding: 0; list-style: none; }

hr { border: 0; border-top: 1px solid var(--color-border); margin: var(--space-6) 0; }

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

/* Focus */
:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

/* Layout helpers */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }
.section { padding: var(--space-11) 0; }
@media (max-width: 720px) { .section { padding: var(--space-9) 0; } }

.stack { display: flex; flex-direction: column; }
.row { display: flex; flex-direction: row; }
.center { display: flex; align-items: center; justify-content: center; }
.between { display: flex; align-items: center; justify-content: space-between; }

.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Text utilities */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-muted { color: var(--color-muted); }
.text-text2 { color: var(--color-text-2); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.upper { text-transform: uppercase; letter-spacing: 0.08em; font-size: var(--text-xs); font-weight: 600; }

/* Spacing utilities */
.mt-1 { margin-top: var(--space-1); } .mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); } .mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); } .mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); } .mt-8 { margin-top: var(--space-8); }
.mt-9 { margin-top: var(--space-9); } .mt-10 { margin-top: var(--space-10); }
.mb-2 { margin-bottom: var(--space-2); } .mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); } .mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); } .gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.flex-1 { flex: 1; }
.full { width: 100%; }

/* Accessibility */
.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;
}

/* Scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: 999px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes shimmer { 0% { background-position: -400px 0; } 100% { background-position: 400px 0; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.fade-in { animation: fadeIn var(--dur-base) var(--ease-out); }
.slide-up { animation: slideUp var(--dur-base) var(--ease-out); }

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