/* ══════════════════════════════════════════════════════════════════
   KNOWLEDGE PAGE  —  命理知识库  (Frontend Mentor style card grid)
   Light cream · Rich card previews · Clean typography
══════════════════════════════════════════════════════════════════ */

/* ── Page shell ── */
.kp-page { background: var(--base); }

/* ── Header ── */
.kp-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.75rem;
  padding: 1.15rem 2rem 0.95rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.kp-header::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent) 15%, var(--orange-b) 40%, var(--cyan-b) 70%, transparent);
  opacity: 0.3;
}
.kp-header-left { display: flex; align-items: baseline; gap: 1rem; }
.kp-title {
  font-family: var(--font-display); font-size: var(--text-xl);
  color: var(--text-primary); letter-spacing: 0.06em; line-height: 1;
}
.kp-subtitle { font-size: var(--text-xs); color: var(--text-muted); font-family: var(--font-mono); }

.kp-header-right { display: flex; align-items: center; gap: 0.65rem; }

.kp-search-wrap { position: relative; }
.kp-search-icon {
  position: absolute; left: 0.65rem; top: 50%; transform: translateY(-50%);
  font-size: var(--text-sm); pointer-events: none; opacity: 0.5;
}
.kp-search {
  padding-left: 2.1rem !important; width: 220px !important;
  font-size: var(--text-sm) !important;
}
.kp-level-select {
  width: auto !important; padding: 0.55rem 2rem 0.55rem 0.75rem !important;
  font-size: var(--text-sm) !important;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='7' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a6840' fill='none' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.65rem center;
  appearance: none; -webkit-appearance: none;
}

/* ── Body ── */
.kp-body { padding: 1.5rem 2rem 2.5rem; overflow-y: auto; flex: 1; }

/* ── Category chips ── */
.kp-cats {
  display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1.25rem;
}
.kp-cat-chip {
  padding: 0.32rem 0.85rem; border-radius:0;
  border: 1px solid var(--border); background: var(--surface);
  font-size: var(--text-xs); font-weight: 600; color: var(--text-muted);
  cursor: pointer; transition: all var(--t-fast); white-space: nowrap;
  letter-spacing: 0.02em;
}
.kp-cat-chip:hover { border-color: var(--border-hover); color: var(--text-primary); background: var(--bg-hover); }
.kp-cat-chip.active {
  background: var(--text-primary); color: var(--surface);
  border-color: var(--text-primary);
}

/* ── Results info ── */
.kp-results-info {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 1.1rem; font-size: var(--text-xs); color: var(--text-muted);
}
.kp-count { font-size: var(--text-md); font-weight: 700; color: var(--text-primary); }
.kp-tag-pill {
  display: inline-flex; align-items: center;
  padding: 0.18rem 0.55rem; border-radius:0;
  font-size: var(--text-xs); font-weight: 600;
  border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  background: color-mix(in srgb, var(--c) 10%, transparent);
  color: var(--c);
}

/* ══════════════════════════════════════════════════════════════════
   CARD GRID
══════════════════════════════════════════════════════════════════ */
.kp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ── Individual card ── */
.kp-card {
  background: var(--surface);
  border-radius:0;
  overflow: hidden;
  box-shadow:none;
  cursor: pointer;
  transition: box-shadow 0.22s ease, transform 0.22s ease;
  display: flex; flex-direction: column;
  /* No border — Frontendmentor style */
}
.kp-card:hover {
  box-shadow:none;
  transform: translateY(-3px);
}

/* ── Card preview (image area) ── */
.kp-card-preview {
  position: relative; height: 126px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
/* Subtle inner glow */
.kp-card-preview::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.18) 100%);
  pointer-events: none;
}

.kp-preview-glyph {
  font-family: var(--font-display); font-size: 3.2rem;
  color: rgba(255,255,255,0.22); line-height: 1;
  user-select: none; letter-spacing: -0.02em;
  text-shadow: 0 4px 24px rgba(0,0,0,0.35), 0 0 60px rgba(255,255,255,0.08);
  transition: transform 0.3s ease, opacity 0.3s ease;
  position: relative; z-index: 1;
}
.kp-card:hover .kp-preview-glyph { transform: scale(1.1) translateY(-3px); opacity:0.35; }

.kp-preview-dots {
  position: absolute; bottom: 10px; left: 14px;
  display: flex; gap: 4px;
}
.kp-dot {
  width: 6px; height: 6px; border-radius:0;
  background: rgba(255,255,255,0.35);
}

.kp-preview-source {
  position: absolute; top: 10px; right: 12px;
  background: rgba(0,0,0,0.28); backdrop-filter: blur(6px);
  color: rgba(255,255,255,0.85); font-size: 10px;
  padding: 2px 8px; border-radius:0;
  font-family: var(--font-mono); letter-spacing: 0.03em;
  white-space: nowrap; max-width: 150px; overflow: hidden; text-overflow: ellipsis;
}

/* ── Card body ── */
.kp-card-body { padding: 0.75rem 0.9rem 0.7rem; flex: 1; display: flex; flex-direction: column; gap: 0.4rem; }

.kp-card-title {
  font-size: var(--text-base); font-weight: 700;
  color: var(--text-primary); letter-spacing: 0.01em; line-height: 1.2;
  font-family: var(--font-sans);
}
.kp-card-en {
  display: none;  /* hide en subtitle to save space */
}

/* ── Tags row ── */
.kp-card-tags {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0.3rem;
  margin: 0.15rem 0;
}

.kp-tag-cat {
  display: inline-flex; align-items: center;
  padding: 0.12rem 0.5rem; border-radius:0;
  font-size: 10px; font-weight: 700; letter-spacing: 0.05em;
  border: 1px solid color-mix(in srgb, var(--c) 40%, transparent);
  color: var(--c); background: color-mix(in srgb, var(--c) 8%, transparent);
  text-transform: uppercase;
}

.kp-tag-small {
  display: inline-flex; align-items: center;
  padding: 0.12rem 0.5rem; border-radius:0;
  font-size: 10px; font-weight: 500; letter-spacing: 0.02em;
  border: 1px solid var(--border); color: var(--text-muted);
  background: transparent;
}

.kp-tag-level {
  display: inline-flex; align-items: center; gap: 0.3rem;
  margin-left: auto;
  padding: 0.15rem 0.55rem; border-radius:0;
  font-size: 10px; font-weight: 700; letter-spacing: 0.05em;
  background: var(--bg); color: var(--c);
  background: var(--bg);
}
.kp-lv-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius:0;
  background: var(--c); color: #fff;
  font-size: 9px; font-weight: 700; flex-shrink: 0;
}

.kp-card-desc {
  font-size: var(--text-xs); color: var(--text-muted);
  line-height: 1.7; font-family: var(--font-serif);
  margin: 0; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

.kp-card-footer {
  margin-top: 0.35rem; padding-top: 0.45rem;
  border-top: 1px solid var(--border);
}
.kp-card-cta {
  font-size: var(--text-xs); font-weight: 600;
  color: var(--accent); letter-spacing: 0.03em;
  transition: gap 0.15s;
}
.kp-card:hover .kp-card-cta { text-decoration: underline; }

/* ══════════════════════════════════════════════════════════════════
   DETAIL MODAL
══════════════════════════════════════════════════════════════════ */
.kp-modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(28,16,8,0.55); backdrop-filter: blur(4px);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 2vh 1rem; overflow-y: auto; align-items: flex-start;
  animation: fadeIn 0.18s ease;
}

.kp-modal {
  background: var(--surface); width: 100%; max-width: min(92vw, 1200px);
  border-radius:0; overflow: hidden;
  box-shadow:none;
  animation: slideUp 0.22s cubic-bezier(0.4,0,0.2,1);
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: none; }
}

.kp-modal-header {
  padding: 1.6rem 1.85rem;
  position: relative; display: flex; align-items: flex-start; justify-content: space-between;
}
.kp-modal-header-inner { display: flex; align-items: flex-start; gap: 1rem; }

.kp-modal-icon {
  font-family: var(--font-display); font-size: 3rem;
  color: rgba(255,255,255,0.85); line-height: 1;
  text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.kp-modal-title {
  font-family: var(--font-display); font-size: var(--text-xl);
  color: #fff; letter-spacing: 0.05em; line-height: 1.1;
}
.kp-modal-en {
  font-size: var(--text-xs); color: rgba(255,255,255,0.65);
  font-family: var(--font-mono); margin-top: 2px;
}
.kp-modal-source {
  display: inline-flex; padding: 0.15rem 0.55rem;
  border-radius:0; font-size: 10px;
  background: rgba(255,255,255,0.2); color: rgba(255,255,255,0.9);
  font-family: var(--font-mono);
}
.kp-modal-close {
  background: rgba(255,255,255,0.15); border: none; border-radius:0;
  width: 30px; height: 30px; color: #fff;
  font-size: var(--text-base); cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
}
.kp-modal-close:hover { background: rgba(255,255,255,0.3); }

.kp-modal-body {
  padding: 1.6rem 1.85rem 2rem; max-height: calc(100vh - 14rem); overflow-y: auto;
  scrollbar-width: thin; scroll-behavior: smooth;
}

/* ── Data cards inside modal ── */
.kp-data-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem;
}
.kp-data-card {
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius:0; padding: 0.75rem;
  display: flex; flex-direction: column; gap: 0.3rem;
  transition: all 0.15s;
}
.kp-data-card:hover { border-color: var(--accent-dim); background: var(--accent-bg); }
.kp-dc-title { font-weight: 700; font-size: var(--text-sm); color: var(--text-primary); font-family: var(--font-serif); }
.kp-dc-sym { font-family: var(--font-display); font-size: 1.5rem; color: var(--accent); line-height: 1; }
.kp-dc-text { font-size: var(--text-xs); color: var(--text-muted); line-height: 1.65; font-family: var(--font-serif); margin: 0; }
.kp-dc-tag { display: inline-block; font-size: 10px; color: var(--cyan); font-family: var(--font-mono); }

/* ── 通用条目：列表布局（长文本内容，如断卦规则/古籍口诀解析）── */
.kp-item-list { display: flex; flex-direction: column; gap: 0.65rem; }
.kp-item-row {
  background: var(--bg-subtle); border: 1px solid var(--border); border-left: 3px solid var(--accent-dim);
  border-radius: 0; padding: 0.85rem 1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.kp-item-fields { display: flex; flex-direction: column; gap: 0.4rem; }
.kp-item-field-row { display: grid; grid-template-columns: auto 1fr; gap: 0.25rem 0.85rem; align-items: baseline; }
.kp-item-field-key {
  font-size: var(--text-xs); color: var(--text-muted); font-weight: 600;
  letter-spacing: 0.03em; white-space: nowrap;
}
.kp-item-field-val {
  font-size: var(--text-sm); color: var(--text-secondary); font-family: var(--font-serif); line-height: 1.8;
}
/* 密集网格内（kp-data-card）使用同一字段样式，但更紧凑 */
.kp-data-card .kp-item-fields { margin-top: 0.15rem; }
.kp-data-card .kp-item-field-val { font-size: var(--text-xs); line-height: 1.7; }

/* ── Pagination ── */
.kp-pagination { display: flex; gap: 0.3rem; margin-top: 1rem; justify-content: center; }
.kp-page-btn {
  width: 30px; height: 30px; border-radius:0;
  border: 1px solid var(--border); background: var(--surface);
  font-size: var(--text-xs); cursor: pointer; color: var(--text-muted); transition: all 0.15s;
}
.kp-page-btn:hover { border-color: var(--border-hover); color: var(--text-primary); }
.kp-page-btn.active { background: var(--accent); border-color: var(--accent-dark); color: #fff; }

/* ── Object sections ── */
.kp-obj-sections { display: flex; flex-direction: column; gap: 0.9rem; }
.kp-obj-section { border-bottom: 1px solid var(--border); padding-bottom: 0.9rem; }
.kp-obj-section:last-child { border-bottom: none; }

.kp-obj-key {
  display: flex; align-items: center; gap: 0.4rem;
  font-weight: 700; font-size: var(--text-sm); color: var(--accent);
  font-family: var(--font-title); letter-spacing: 0.05em; margin-bottom: 0.35rem;
}
.kp-obj-key-dot {
  width: 6px; height: 6px; border-radius:0;
  background: var(--accent-dim); flex-shrink: 0;
}

.kp-val-str {
  font-family: var(--font-serif); font-size: var(--text-sm);
  color: var(--text-secondary); line-height: 1.82; margin: 0;
}
.kp-val-num { font-size: var(--text-base); font-weight: 700; color: var(--accent); }

.kp-val-arr { display: flex; flex-direction: column; gap: 0.25rem; }
.kp-val-arr-item { display: flex; gap: 0.4rem; align-items: flex-start; }
.kp-arr-bullet { color: var(--accent-dim); flex-shrink: 0; font-size: 0.9rem; margin-top: 0.1em; }

.kp-val-obj {
  display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 1rem;
  background: var(--bg-subtle); border-radius:0;
  padding: 0.65rem 0.85rem; border: 1px solid var(--border);
}
.kp-val-obj-row { display: contents; }
.kp-val-obj-key {
  font-size: var(--text-xs); color: var(--text-muted); font-weight: 600;
  letter-spacing: 0.03em; padding-top: 0.12em; white-space: nowrap;
}
.kp-val-obj-val { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.7; }

.kp-error {
  background: var(--accent-bg); border: 1px solid var(--accent-dim);
  border-radius:0; padding: 1.5rem; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
}

/* ── Responsive ── */
/* Grid is now auto-fill responsive — no manual breakpoint needed */
@media (max-width: 700px)  {
  .kp-grid { grid-template-columns: 1fr; }
  .kp-body { padding: 1rem; }
  .kp-header { padding: 0.9rem 1rem; }
  .kp-header-left { flex-direction: column; gap: 0.2rem; }
  .kp-modal-overlay { padding: 0; align-items: flex-end; }
  .kp-modal { border-radius:0; max-height: 92vh; }
}

/* ── Enhanced category chip active state ── */
.kp-cat-chip.active {
  background: var(--text-primary); color: var(--surface);
  border-color: var(--text-primary);
  box-shadow:none;
}

/* ── Better data display for strings with Chinese text ── */
.kp-val-str {
  background: var(--bg-subtle);
  border-radius:0;
  padding: 0.5rem 0.75rem;
  border-left: 2px solid var(--accent-dim);
}

/* ── Level badge improvements ── */
.kp-tag-level {
  border: 1px solid currentColor;
  opacity: 0.85;
}

/* ── Catalog count badge ── */
.kp-cat-chip { position: relative; }

/* ── Card grid gap on hover focus ── */
.kp-card:focus-within { outline: 2px solid var(--accent-dim); }

/* ── Modal close button ── */
.kp-modal-close:focus { outline: 2px solid rgba(255,255,255,0.5); }

/* ── Empty state ── */
.kp-empty {
  display: flex; flex-direction: column; align-items: center;
  padding: 4rem 2rem; text-align: center; gap: 0.75rem;
}
.kp-empty-icon { font-size: 3rem; opacity: 0.18; font-family: var(--font-display); }
.kp-empty-text { color: var(--text-muted); font-family: var(--font-serif); font-size: var(--text-base); }

/* ── Section header inside modal ── */
.kp-section-header {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0; margin-bottom: 0.75rem;
  border-bottom: 1.5px solid var(--accent-dim);
}
.kp-section-header-text {
  font-family: var(--font-title); font-size: var(--text-md);
  color: var(--accent); letter-spacing: 0.06em;
}

/* ── Tag color variants ── */
/* kp-tag-cat 背景色已由基础规则的 color-mix(in srgb, var(--c) 8%, transparent) 动态计算，
   随 --c（分类色）自动适配，无需为每个色值单独写覆盖规则（此前 6 条硬编码规则已随配色改版全部失效，予以移除）。 */