/* ── ResearchIT — Custom Styles (Phase 5) ─────────────────────────────────── */

/* ── Typography ──────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, .mono {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Navbar glassmorphism ──────────────────────────────────────────────── */
.navbar-glass {
  background: rgba(20, 20, 30, 0.7);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease;
}

[data-theme="light"] .navbar-glass {
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

/* ── Brand gradient ─────────────────────────────────────────────────────── */
.brand-text {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Paper card enhancements ─────────────────────────────────────────── */
.paper-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}

.paper-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border-color: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .paper-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  border-color: rgba(139, 92, 246, 0.3);
}

/* ── Category badges (colour-coded) ──────────────────────────────────── */
.cat-badge {
  font-size: 0.65rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
}

.cat-cs    { background: rgba(99,102,241,0.15);  color: #818cf8; }
.cat-phys  { background: rgba(168,85,247,0.15);  color: #c084fc; }
.cat-math  { background: rgba(34,197,94,0.15);   color: #4ade80; }
.cat-bio   { background: rgba(234,179,8,0.15);   color: #facc15; }
.cat-econ  { background: rgba(244,63,94,0.15);   color: #fb7185; }
.cat-stat  { background: rgba(6,182,212,0.15);   color: #22d3ee; }
.cat-eess  { background: rgba(251,146,60,0.15);  color: #fb923c; }
.cat-other { background: rgba(148,163,184,0.15); color: #94a3b8; }

/* ── Save button animation ─────────────────────────────────────────── */
@keyframes save-pulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.save-success {
  animation: save-pulse 0.3s ease-out;
}

/* ── HTMX swap transitions ────────────────────────────────────────── */
.htmx-swapping {
  opacity: 0;
  transition: opacity 0.2s ease-out;
}

.htmx-added {
  opacity: 0;
}

.htmx-settling {
  opacity: 1;
  transition: opacity 0.3s ease-in;
}

/* ── Skeleton loading ──────────────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton-card {
  background: linear-gradient(
    90deg,
    rgba(148, 163, 184, 0.06) 25%,
    rgba(148, 163, 184, 0.12) 50%,
    rgba(148, 163, 184, 0.06) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 12px;
  height: 140px;
}

/* ── Onboarding ──────────────────────────────────────────────────────── */

/* Category tile */
.category-tile {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 1rem;
  transition: all 0.2s ease;
  user-select: none;
  text-align: center;
}

[data-theme="dark"] .category-tile {
  background: rgba(30, 30, 45, 0.6);
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="light"] .category-tile {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.06);
}

.category-tile:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.1);
}

.category-tile.selected {
  border-color: #6366f1;
  background: rgba(99, 102, 241, 0.1);
  box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.3),
              0 4px 20px rgba(99, 102, 241, 0.15);
}

.category-tile .tile-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
}

.category-tile .tile-name {
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.category-tile .tile-desc {
  font-size: 0.7rem;
  opacity: 0.6;
  line-height: 1.3;
}

.category-tile .check-mark {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #6366f1;
  color: white;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
}

.category-tile.selected .check-mark {
  display: flex;
}

/* ── Progress dots ────────────────────────────────────────────────────── */
.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.3);
  transition: all 0.3s ease;
}

.step-dot.active {
  background: #6366f1;
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
  transform: scale(1.2);
}

.step-dot.completed {
  background: #22c55e;
}

/* ── Theme transition ─────────────────────────────────────────────────── */
html {
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ── Custom scrollbar (dark mode) ─────────────────────────────────────── */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.3);
  border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.5);
}

/* ── Stats pills ──────────────────────────────────────────────────────── */
.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ── Misc ─────────────────────────────────────────────────────────────── */
.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.fade-in {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Seed search compact card ─────────────────────────────────────────── */
.seed-card {
  padding: 0.75rem;
  border-radius: 10px;
  transition: all 0.2s ease;
}

[data-theme="dark"] .seed-card {
  background: rgba(30, 30, 45, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

[data-theme="light"] .seed-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.seed-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
}