/* =============================================================
   achievements.css — Achievements Page (Layer 2 / Task 6)
   Trophy room: completion ring, category sections, locked grid,
   shareable card export.
   ============================================================= */

/* ── Page shell ──────────────────────────────────────────────── */
.achievements-page {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Header + ring ───────────────────────────────────────────── */
.ach-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}
.ach-header h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  margin: 0 0 var(--space-md);
  letter-spacing: 0.01em;
}

.ach-progress-wrap {
  width: 160px;
  height: 160px;
  margin: 24px auto;
  position: relative;
  display: grid;
  place-items: center;
}
.ach-progress-ring {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  /* background applied inline as conic-gradient by JS */
  background: conic-gradient(oklch(0.2 0.02 280) 0 100%);
  transition: background 600ms ease;
  -webkit-mask: radial-gradient(circle, transparent 58%, black 60%);
          mask: radial-gradient(circle, transparent 58%, black 60%);
}
.ach-progress-pct {
  position: absolute;
  font-size: 2rem;
  font-weight: 700;
  color: white;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  letter-spacing: -0.02em;
  pointer-events: none;
}
.ach-stats {
  color: var(--color-text-muted, var(--color-muted, oklch(0.7 0.02 280)));
  margin: 0;
  font-size: var(--text-md);
}

/* ── Category sections ───────────────────────────────────────── */
.ach-categories {
  display: grid;
  gap: var(--space-xl);
}
.ach-cat h2 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 0 var(--space-md);
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
  color: white;
  border-bottom: 1px solid oklch(1 0 0 / 0.08);
  padding-bottom: 8px;
}
.ach-cat h2 small {
  font-weight: 400;
  opacity: 0.6;
  font-size: 0.85em;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
}

/* ── Achievement grid + cards ────────────────────────────────── */
.ach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}
.ach-card {
  padding: 16px;
  border-radius: 12px;
  background: oklch(0.18 0.02 280 / 0.5);
  border: 1px solid oklch(1 0 0 / 0.08);
  transition: transform 200ms ease, opacity 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ach-card.locked {
  opacity: 0.45;
  filter: grayscale(0.8);
}
.ach-card.unlocked {
  background: linear-gradient(135deg, oklch(0.65 0.22 290 / 0.15), oklch(0.7 0.18 200 / 0.1));
  border-color: oklch(0.65 0.22 290 / 0.35);
  box-shadow: 0 0 0 1px oklch(0.65 0.22 290 / 0.18), 0 8px 24px oklch(0.4 0.12 290 / 0.18);
}
.ach-card:hover { transform: translateY(-2px); }
.ach-card:focus-visible {
  outline: 2px solid oklch(0.7 0.2 290);
  outline-offset: 3px;
}
.ach-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  line-height: 1;
}
.ach-title {
  font-weight: 600;
  color: white;
  letter-spacing: 0.01em;
}
.ach-desc {
  color: var(--color-text-muted, var(--color-muted, oklch(0.7 0.02 280)));
  font-size: 0.85rem;
  margin-top: 4px;
  line-height: 1.4;
}
.ach-date {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.7rem;
  color: oklch(0.78 0.16 290);
  margin-top: 6px;
  letter-spacing: 0.02em;
}

/* ── Export card button ──────────────────────────────────────── */
.ach-share {
  text-align: center;
  margin: var(--space-2xl) 0;
}
#export-card {
  padding: 12px 24px;
  font-size: 1rem;
  cursor: pointer;
  background: linear-gradient(135deg, oklch(0.55 0.22 290), oklch(0.6 0.18 200));
  color: white;
  border: 1px solid oklch(0.7 0.2 290);
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 180ms ease, box-shadow 180ms ease;
}
#export-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px oklch(0.5 0.18 290 / 0.4);
}
#export-card:focus-visible {
  outline: 2px solid oklch(0.85 0.18 290);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .ach-card,
  #export-card,
  .ach-progress-ring { transition: none; }
}