/* ─────────────────────────────────────────────────────────────────────────
   components.css — gk-btn, gk-card, gk-chip, gk-asanoha, gk-seal…
   Port từ docs/project/screens/shared.jsx
   ───────────────────────────────────────────────────────────────────────── */

/* Buttons */
.gk-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  cursor: pointer;
  white-space: nowrap;
}

.gk-btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, .15) inset,
    0 6px 18px -6px color-mix(in oklch, var(--primary) 60%, transparent);
}
.gk-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, .2) inset,
    0 10px 24px -8px color-mix(in oklch, var(--primary) 70%, transparent);
}

.gk-btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.gk-btn-ghost:hover { background: var(--paper-alt); }

.gk-btn-soft {
  background: var(--primary-soft);
  color: var(--primary);
}

.gk-btn-sm { height: 36px; padding: 0 14px; font-size: 13.5px; border-radius: 8px; }
.gk-btn-lg { height: 52px; padding: 0 24px; font-size: 16px; border-radius: 12px; }

/* Surfaces */
.gk-card      { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.gk-card-lift { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* Chips */
.gk-chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 26px; padding: 0 10px; border-radius: 99px;
  font-size: 12px; font-weight: 600; background: var(--paper-alt); color: var(--ink);
}
.gk-chip-primary { background: var(--primary-soft); color: var(--primary); }
.gk-chip-outline { background: transparent; color: var(--ink-soft); border: 1px solid var(--rule-strong); }

/* Patterns / ornaments */
.gk-asanoha {
  background-image:
    radial-gradient(circle at 50% 0%, transparent 13px, var(--rule) 13px 14px, transparent 14px),
    radial-gradient(circle at 0% 50%, transparent 13px, var(--rule) 13px 14px, transparent 14px),
    radial-gradient(circle at 100% 50%, transparent 13px, var(--rule) 13px 14px, transparent 14px),
    radial-gradient(circle at 50% 100%, transparent 13px, var(--rule) 13px 14px, transparent 14px);
  background-size: 40px 40px;
}

.gk-grid-bg {
  background-image:
    linear-gradient(to right,  var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 48px 48px;
}

.gk-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  font-family: "Noto Serif JP", serif;
  font-weight: 800;
  font-size: 18px;
  border-radius: 4px;
  letter-spacing: 0;
  box-shadow: 0 2px 6px rgba(226, 61, 40, .3);
}
.gk-brand-ginou .gk-seal { box-shadow: 0 2px 6px rgba(45, 74, 124, .3); }

/* Icon wrapper */
.gk-icon { flex-shrink: 0; }

/* ── Passage (đoạn văn dùng chung — đọc hiểu / đục lỗ) ──────────────── */
.gk-passage {
  background: var(--paper-alt);
  padding: 18px 22px;
  border-radius: 12px;
  margin-bottom: 22px;
  border-left: 3px solid var(--primary);
  font-size: 17px;
  line-height: 1.75;
}
.gk-passage__label {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.gk-passage__body { color: var(--ink); }
.gk-passage--cloze .gk-passage__body { line-height: 2; }

/* Marker [N] trong đoạn cloze. .is-active = vị trí đang chọn */
.gk-cloze-marker {
  display: inline-block;
  padding: 2px 10px;
  margin: 0 3px;
  background: rgba(0, 0, 0, .06);
  border-radius: 5px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92em;
  color: var(--ink-soft);
  transition: background .15s, color .15s, transform .15s;
}
.gk-cloze-marker.is-active {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px color-mix(in oklch, var(--primary) 35%, transparent);
}