/* Visual Polish — Iteration 2
   Enhanced card effects, better contrast, gradient accents
*/

/* ── Enhanced Cards ──────────────────────────────────────────── */
.card {
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px rgba(47, 129, 247, 0.08);
}

/* KPI cards with gradient accent */
.card[style*="text-align:center"] {
  position: relative;
  overflow: hidden;
}
.card[style*="text-align:center"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--link));
  opacity: 0;
  transition: opacity 0.2s ease;
}
.card[style*="text-align:center"]:hover::before {
  opacity: 1;
}

/* ── Data Tables ─────────────────────────────────────────────── */
.data-table tbody tr {
  transition: background 0.15s ease;
}
.data-table tbody tr:hover {
  background: rgba(47, 129, 247, 0.04);
}

/* ── Band Colors (enhanced) ──────────────────────────────────── */
.band-P1 {
  color: #ff8f8f;
  font-weight: 700;
  text-shadow: 0 0 8px rgba(255, 143, 143, 0.2);
}
.band-P2 {
  color: #ffd27a;
  font-weight: 700;
  text-shadow: 0 0 8px rgba(255, 210, 122, 0.2);
}
.band-P3 {
  color: #9fd0ff;
  font-weight: 600;
}

/* ── Buttons (enhanced) ──────────────────────────────────────── */
.btn-primary {
  transition: background 0.2s ease, transform 0.1s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.25);
}
.btn-primary:active {
  transform: translateY(0);
}

/* ── Sidebar (enhanced) ──────────────────────────────────────── */
.sidebar-link {
  transition: background 0.15s ease, color 0.15s ease, padding-left 0.15s ease;
}
.sidebar-link:hover {
  padding-left: 0.85rem;
}
.sidebar-link.is-active {
  position: relative;
}
.sidebar-link.is-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 3px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

/* ── Portal Hero (enhanced) ──────────────────────────────────── */
.portal-hero h1 {
  background: linear-gradient(135deg, var(--fg) 0%, var(--link) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.portal-hero h1 .zh {
  -webkit-text-fill-color: var(--muted);
}

/* ── Claim Box (enhanced) ────────────────────────────────────── */
.claim {
  border-left-width: 4px;
  transition: border-left-color 0.2s ease;
}
.claim:hover {
  border-left-color: var(--link);
}

/* ── Badges (enhanced) ───────────────────────────────────────── */
.badge {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.badge:hover {
  transform: scale(1.05);
}

/* ── Form Controls (enhanced) ────────────────────────────────── */
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.15);
}

/* ── Heat Map Page ───────────────────────────────────────────── */
#heat-map-canvas svg rect {
  transition: opacity 0.15s ease;
}
#heat-map-canvas svg rect:hover {
  opacity: 0.9;
  stroke-width: 2;
}

/* ── Toast (enhanced) ────────────────────────────────────────── */
.toast {
  backdrop-filter: blur(8px);
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-elev);
}
::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}

/* ── Selection ───────────────────────────────────────────────── */
::selection {
  background: rgba(47, 129, 247, 0.3);
}

/* ── Code Blocks ─────────────────────────────────────────────── */
code {
  transition: border-color 0.15s ease;
}
code:hover {
  border-color: var(--accent);
}

/* ── Print Styles ────────────────────────────────────────────── */
@media print {
  .sidebar, .site-header, .site-footer, .btn, button, #toast-container {
    display: none !important;
  }
  .shell.with-sidebar {
    display: block;
  }
  body {
    background: white;
    color: black;
  }
  .card {
    border: 1px solid #ccc;
    break-inside: avoid;
  }
}

/* ── Animation Keyframes ─────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.card, .claim, .warn, .err {
  animation: fadeIn 0.25s ease-out;
}

/* ── Responsive Improvements ─────────────────────────────────── */
@media (max-width: 600px) {
  .grid {
    grid-template-columns: 1fr !important;
  }
  .actions {
    flex-direction: column;
  }
  .actions .btn {
    text-align: center;
  }
  .data-table {
    font-size: 0.82rem;
  }
  .data-table th, .data-table td {
    padding: 0.35rem 0.3rem;
  }
}