/* ═══════════════════════════════════════════════════════════════
   PriceComparator - Design System
   Sénégal / Afrique de l'Ouest
   ═══════════════════════════════════════════════════════════════ */

/* ─── Variables ─────────────────────────────────────────────── */
:root {
  --primary: #667eea;
  --primary-dark: #5a6fd6;
  --secondary: #764ba2;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #10b981, #059669);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 8px 30px rgba(0,0,0,.12);
  --shadow-lg: 0 20px 50px rgba(0,0,0,.15);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: .25s ease;
}

/* ─── Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gradient);
  min-height: 100vh;
  color: #1a1a2e;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ─── Navbar ─────────────────────────────────────────────────── */
.navbar {
  background: rgba(255,255,255,.97) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(102,126,234,.15);
  padding: .6rem 0;
}

.navbar-brand {
  font-weight: 800;
  font-size: 1.4rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.5px;
}

.navbar-nav .nav-link {
  font-weight: 500;
  color: #444 !important;
  padding: .4rem .8rem;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
.navbar-nav .nav-link:hover {
  background: rgba(102,126,234,.1);
  color: var(--primary) !important;
}

/* ─── Cards ──────────────────────────────────────────────────── */
.card-modern {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: none;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card-modern:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn-gradient {
  background: var(--gradient);
  border: none;
  color: #fff;
  font-weight: 600;
  letter-spacing: .3px;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.btn-gradient:hover, .btn-gradient:focus {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102,126,234,.45);
  opacity: .95;
}
.btn-gradient:active { transform: translateY(0); }
.btn-gradient:disabled { opacity: .65; transform: none; box-shadow: none; }

.btn-success-gradient {
  background: var(--gradient-success);
  border: none;
  color: #fff;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-success-gradient:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16,185,129,.4);
}

/* ─── Price display ──────────────────────────────────────────── */
.price-tag {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--success);
  letter-spacing: -.5px;
}
.old-price {
  text-decoration: line-through;
  color: var(--danger);
  font-size: .95rem;
  opacity: .8;
}
.discount-badge {
  background: var(--danger);
  color: #fff;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 700;
}

/* ─── Loading spinner ────────────────────────────────────────── */
.loading { display: none; text-align: center; padding: 50px; }

.spinner {
  border: 4px solid rgba(102,126,234,.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin .8s linear infinite;
  margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Forms ──────────────────────────────────────────────────── */
.form-control, .form-select {
  border-radius: var(--radius-sm);
  border: 1.5px solid #e5e7eb;
  padding: .55rem .85rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102,126,234,.2);
}

/* ─── Badges ─────────────────────────────────────────────────── */
.badge {
  font-weight: 600;
  letter-spacing: .3px;
  border-radius: 6px;
  padding: .35em .65em;
}

/* ─── Tables ─────────────────────────────────────────────────── */
.table {
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.table thead th {
  background: #f8f9ff;
  color: #555;
  font-weight: 600;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 2px solid #e5e7eb;
}
.table tbody tr:hover { background: rgba(102,126,234,.04); }

/* ─── Footer ─────────────────────────────────────────────────── */
footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%) !important;
}
footer a { color: rgba(255,255,255,.6); transition: color var(--transition); }
footer a:hover { color: #fff; }

/* ─── Alerts ─────────────────────────────────────────────────── */
.alert {
  border: none;
  border-radius: var(--radius-sm);
  border-left: 4px solid;
}
.alert-success { border-color: var(--success); background: rgba(16,185,129,.08); color: #065f46; }
.alert-danger   { border-color: var(--danger);  background: rgba(239,68,68,.08);  color: #991b1b; }
.alert-warning  { border-color: var(--warning); background: rgba(245,158,11,.08); color: #92400e; }
.alert-info     { border-color: var(--info);    background: rgba(6,182,212,.08);  color: #164e63; }

/* ─── Navbar search ──────────────────────────────────────────── */
.navbar .form-control {
  border-radius: 25px 0 0 25px;
  border-right: none;
  background: #f8f9ff;
}
.navbar .btn {
  border-radius: 0 25px 25px 0;
}

/* ─── Hero banner (home) ─────────────────────────────────────── */
.hero-banner {
  background: linear-gradient(135deg, rgba(102,126,234,.15), rgba(118,75,162,.15));
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

/* ─── Product card hover effect ─────────────────────────────── */
.product-card {
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ─── Store type colors ──────────────────────────────────────── */
.store-type-supermarket { color: #667eea; }
.store-type-local_shop  { color: var(--success); }
.store-type-online      { color: var(--info); }
.store-type-marketplace { color: var(--warning); }

/* ─── Price comparison table ─────────────────────────────────── */
.price-row {
  transition: background var(--transition);
}
.price-row:hover { background: rgba(102,126,234,.04); }
.price-row.best-price {
  border-left: 4px solid var(--success) !important;
  background: rgba(16,185,129,.04);
}

/* ─── Pagination ─────────────────────────────────────────────── */
.page-link {
  color: var(--primary);
  border-radius: var(--radius-sm) !important;
  margin: 0 2px;
  border: 1.5px solid #e5e7eb;
}
.page-item.active .page-link {
  background: var(--gradient);
  border-color: transparent;
}

/* ─── Progress bar gradient ──────────────────────────────────── */
.progress-bar.bg-gradient {
  background: var(--gradient) !important;
}

/* ─── Scroll animations ──────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp .4s ease both; }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar .form-control { width: 100% !important; }
  .price-tag { font-size: 1.35rem; }
  .card-modern { border-radius: 10px; }
  .hero-banner { padding: 2rem 1rem; }
}

/* ─── Dropdown ───────────────────────────────────────────────── */
.dropdown-menu {
  border: none;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.dropdown-item {
  padding: .5rem 1rem;
  transition: background var(--transition), color var(--transition);
}
.dropdown-item:hover {
  background: var(--gradient);
  color: #fff;
}
.dropdown-item i { width: 18px; text-align: center; margin-right: 8px; }

/* ─── Scraping log terminal ──────────────────────────────────── */
.log-terminal {
  background: #1e1e1e;
  color: #d4d4d4;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: .82rem;
  border-radius: var(--radius);
  padding: 1rem;
  max-height: 500px;
  overflow-y: auto;
}
.log-terminal .log-info    { color: #4ec9b0; }
.log-terminal .log-warning { color: #ce9178; }
.log-terminal .log-error   { color: #f44747; }

/* ─── Chart containers ───────────────────────────────────────── */
.chart-container {
  position: relative;
  height: 300px;
}

/* ─── Hover background utility ───────────────────────────────── */
.hover-bg:hover { background: rgba(102,126,234,.06); }

/* ─── Sticky sidebar ─────────────────────────────────────────── */
.sticky-sidebar {
  position: sticky;
  top: 80px;
}

/* ─── Active filter pill ─────────────────────────────────────── */
.active-filter {
  background: var(--gradient) !important;
  color: #fff !important;
  border-color: transparent !important;
}