/* ============================================================
   base.css — Reset, typography, layout primitives, helpers
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; width: 100%; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

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

input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text-primary);
  background-color: var(--color-bg-card);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--color-text-primary);
}
h1 { font-weight: 800; }

/* ---- SVG icons ---- */
.ic-svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ---- Helpers ---- */
.text-muted { color: var(--color-text-muted); }
.mono       { font-family: var(--font-mono); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}
.section { padding-block: var(--space-2xl); }
.section-title { font-size: clamp(1.6rem, 4vw, 2.3rem); margin-bottom: var(--space-lg); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), box-shadow var(--transition),
              color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background-color: var(--color-primary-dark); }

.btn-accent { background-color: var(--color-accent); color: #fff; }
.btn-accent:hover { background-color: var(--color-accent-dark); }

.btn-outline {
  border: 1px solid var(--color-border-strong);
  background-color: transparent;
  color: var(--color-text-primary);
}
.btn-outline:hover { border-color: var(--color-text-primary); }

.btn-block { width: 100%; }
.btn-lg { padding: 0.85rem 1.7rem; font-size: 1rem; }

/* ---- Badge / pill ---- */
.pill {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3em 0.7em;
  border-radius: var(--radius-sm);
}
.pill-primary { background: var(--color-primary); color: #fff; }
.pill-accent  { background: var(--color-accent);  color: #fff; }
.pill-success { background: var(--color-success); color: #fff; }
.pill-muted   { background: var(--color-bg-secondary); color: var(--color-text-muted); }

/* ---- Accessibility ---- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.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;
}
.skip-link {
  position: absolute;
  left: -999px; top: 0;
  z-index: 1000;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---- Star rating ---- */
.stars { color: var(--color-warning); font-size: 0.85rem; letter-spacing: 0.02em; }

/* ---- Price ---- */
.price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}
.price-original {
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
  text-decoration: line-through;
  font-size: 0.85em;
  font-weight: 500;
}
.discount {
  color: var(--color-success);
  font-weight: 600;
  font-size: 0.82em;
}

/* ---- Utility ---- */
.flex { display: flex; }
.items-center { align-items: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.hidden { display: none !important; }
.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}
.empty-state .empty-icon {
  width: 56px; height: 56px;
  margin: 0 auto var(--space-md);
  color: var(--color-text-muted);
}
.empty-state .empty-icon .ic-svg { width: 56px; height: 56px; stroke-width: 1.3; }
.empty-state h2 { margin-bottom: var(--space-sm); }
.empty-state p { color: var(--color-text-muted); margin-bottom: var(--space-lg); }

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%) translateY(140%);
  background: var(--color-text-primary);
  color: var(--color-bg);
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  z-index: 2000;
  opacity: 0;
  transition: transform var(--transition), opacity var(--transition);
  font-weight: 500;
  font-size: 0.9rem;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }