/* components.css — Reusable UI components: badges, buttons, cards, filters */

/* ── Badges ───────────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.badge-metal            { background: var(--color-metal-bg);            color: var(--color-metal); }
.badge-plastic          { background: var(--color-plastic-bg);          color: var(--color-plastic); }
.badge-ceramic          { background: var(--color-ceramic-bg);          color: var(--color-ceramic); }
.badge-composite        { background: var(--color-composite-bg);        color: var(--color-composite); }
.badge-glass            { background: var(--color-glass-bg);            color: var(--color-glass); }
.badge-natural-material { background: var(--color-natural-material-bg); color: var(--color-natural-material); }
.badge-elastomer        { background: var(--color-elastomer-bg);        color: var(--color-elastomer); }
.badge-common    { background: #f0fdf4; color: #166534;
                   border: 1px solid #86efac; }
.badge-specialty { background: #fef3c7; color: #92400e;
                   border: 1px solid #fcd34d; }
.badge-exotic    { background: #ede9fe; color: #5b21b6;
                   border: 1px solid #c4b5fd; }

/* Magnetic classification badges */
.badge-ferro  { background: #fde8e8; color: #9b1c1c; }
.badge-para   { background: #e0f0ff; color: #1e40af; }
.badge-dia    { background: #d1fae5; color: #065f46; }

/* ── Buttons ──────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}
.btn-secondary:hover {
  background: var(--color-bg);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

/* ── Material card ────────────────────────────────────────────────────── */

.material-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s, border-color 0.15s;
}

.material-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--color-border-strong);
}

.material-card.is-selected {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.card-header {
  padding: var(--sp-4) var(--sp-4) var(--sp-3);
}

.card-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--sp-2);
  line-height: 1.3;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
}

.card-props {
  padding: var(--sp-2) var(--sp-4);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  flex: 1;
}

.prop-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 3px 0;
}

.prop-row dt {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-style: italic;
  cursor: help;
}

.prop-row dd {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text);
  text-align: right;
}

.prop-row dd.missing { color: var(--color-text-faint); }

.card-footer {
  padding: var(--sp-3) var(--sp-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.compare-label {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.compare-label input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--color-primary);
}

.btn-view {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  padding: 2px var(--sp-2);
  border-radius: var(--radius);
  transition: background 0.15s;
}
.btn-view:hover {
  background: var(--color-primary-light);
  text-decoration: none;
}

/* ── Filter sidebar ───────────────────────────────────────────────────── */

.filter-section {
  padding: var(--sp-4);
  border-bottom: 1px solid var(--color-border);
}

.filter-section:last-child { border-bottom: none; }

.filter-heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2);
}

.filter-search {
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.filter-search:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checkbox-group details summary {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px 0;
  list-style: none;
}
.checkbox-group details summary::after {
  content: ' ▸';
}
.checkbox-group details[open] summary::after {
  content: ' ▾';
}

.filter-check {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.8rem;
  color: var(--color-text);
  cursor: pointer;
  padding: 2px 0;
}
.filter-check input { accent-color: var(--color-primary); cursor: pointer; }

.filter-toggle {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.8rem;
  color: var(--color-text);
  cursor: pointer;
}
.filter-toggle input { accent-color: var(--color-primary); cursor: pointer; }

.filter-reset {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}
.filter-reset:hover { color: var(--color-danger); }

.btn-advanced-select {
  display: block;
  width: 100%;
  margin-top: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--color-primary);
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  transition: background 0.15s;
}
.btn-advanced-select:hover {
  background: #d0e4f7;
}

/* ── Compare bar ──────────────────────────────────────────────────────── */

.compare-bar {
  position: fixed;
  bottom: var(--sp-5);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: var(--color-primary-dark);
  color: #fff;
  padding: var(--sp-3) var(--sp-5);
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  font-size: 0.875rem;
  white-space: nowrap;
}

.compare-bar[hidden] { display: none; }

.compare-bar-count { font-weight: 600; }

.compare-bar-btn {
  background: #fff;
  color: var(--color-primary-dark);
  border: none;
  border-radius: 999px;
  padding: var(--sp-1) var(--sp-4);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.compare-bar-btn:hover { background: var(--color-primary-light); }

.compare-bar-clear {
  background: transparent;
  color: rgba(255,255,255,0.7);
  border: none;
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0;
}
.compare-bar-clear:hover { color: #fff; }

.compare-bar-btn-secondary {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
}
.compare-bar-btn-secondary:hover { background: rgba(255,255,255,0.25); }
.compare-bar-btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Export dropdown ──────────────────────────────────────────────────── */

.export-dropdown {
  position: relative;
  display: inline-block;
}

.export-btn {
  font-size: 0.8rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: white;
  cursor: pointer;
  color: var(--color-text);
  transition: background 0.1s;
}
.export-btn:hover { background: var(--color-primary-light); }

.export-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  z-index: 200;
  min-width: 200px;
}
.export-menu[hidden] { display: none; }

.export-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.45rem 0.75rem;
  font-size: 0.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-family: var(--font-sans);
}
.export-option:hover { background: var(--color-bg); }
.export-option + .export-option { border-top: 1px solid var(--color-border); }

/* ── Empty state ──────────────────────────────────────────────────────── */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-8) var(--sp-4);
  color: var(--color-text-muted);
}

.empty-state p { font-size: 0.875rem; margin-top: var(--sp-2); }