/* PriceTrack — Dark blue financial dashboard */
:root {
  --bg: #0F172A;
  --surface: #1E293B;
  --surface-hover: #334155;
  --border: #334155;
  --text: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --blue: #2563EB;
  --blue-light: #3B82F6;
  --blue-bg: rgba(37, 99, 235, 0.12);
  --green: #22C55E;
  --green-bg: rgba(34, 197, 94, 0.10);
  --red: #EF4444;
  --red-bg: rgba(239, 68, 68, 0.10);
  --yellow: #EAB308;
  --yellow-bg: rgba(234, 179, 8, 0.10);
  --font: 'Optima', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 10px;
  --radius-sm: 6px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 15px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 1.5rem; }
.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}
.back-link:hover { color: var(--blue-light); }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand h1 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; }
.last-updated { font-size: 0.8rem; color: var(--text-muted); }

/* Main */
.main { padding: 1.5rem 2rem 3rem; max-width: 1400px; margin: 0 auto; width: 100%; flex: 1; }

/* Summary Strip */
.summary-strip {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  flex: 1;
  min-width: 160px;
}
.summary-card .label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.3rem; }
.summary-card .value { font-size: 1.6rem; font-weight: 700; }
.summary-card .value.green { color: var(--green); }
.summary-card .value.red { color: var(--red); }
.summary-card .value.yellow { color: var(--yellow); }
.summary-card .value.blue { color: var(--blue-light); }
.summary-card.clickable { cursor: pointer; transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; border: 1px solid transparent; }
.summary-card.clickable:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.3); border-color: var(--blue); }
.summary-card.clickable::after { content: 'Click to view →'; display: block; font-size: 0.65rem; color: var(--text-muted); margin-top: 0.3rem; opacity: 0; transition: opacity 0.15s; }
.summary-card.clickable:hover::after { opacity: 1; }
.date-filter-row { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem; }
.date-filter-row .date-label { color: var(--text-muted); font-size: 0.85rem; }
.date-input { background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 0.4rem 0.6rem; border-radius: 6px; font-family: var(--font); font-size: 0.85rem; }
.date-input:focus { border-color: var(--blue); outline: none; }

/* Section */
.section { margin-bottom: 2rem; }
.section-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }

/* Competitor Cards */
.competitor-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.comp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}
.comp-card:hover { border-color: var(--blue); background: var(--surface-hover); transform: translateY(-1px); }
.comp-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--blue);
  opacity: 0;
  transition: opacity 0.2s;
}
.comp-card:hover::before { opacity: 1; }
.comp-name { font-size: 1.1rem; font-weight: 600; text-transform: capitalize; margin-bottom: 0.8rem; }
.comp-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.comp-stat .stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.comp-stat .stat-value { font-size: 1.1rem; font-weight: 600; }
.comp-changes { margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px solid var(--border); display: flex; gap: 1rem; flex-wrap: wrap; }
.change-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.change-badge.increase { background: var(--red-bg); color: var(--red); }
.change-badge.decrease { background: var(--green-bg); color: var(--green); }
.change-badge.new { background: var(--yellow-bg); color: var(--yellow); }
.change-badge.neutral { background: var(--blue-bg); color: var(--blue-light); }

/* Charts */
.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.chart-title { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 0.8rem; }

/* Alerts Controls */
.alerts-controls { display: flex; gap: 0.8rem; margin-bottom: 1rem; flex-wrap: wrap; }
.alerts-controls select, .alerts-controls input {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.85rem;
}

/* Tables */
.alerts-table-wrap, .drilldown-table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
th {
  text-align: left;
  padding: 0.7rem 0.8rem;
  background: var(--surface);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  cursor: pointer;
  user-select: none;
}
td {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tr:hover td { background: rgba(255,255,255,0.02); }
tr.row-increase td { background: var(--red-bg); }
tr.row-decrease td { background: var(--green-bg); }
tr.row-new td { background: var(--yellow-bg); }
.price-change { font-weight: 600; }
.price-change.up { color: var(--red); }
.price-change.down { color: var(--green); }
.product-link { color: var(--blue-light); text-decoration: none; }
.product-link:hover { text-decoration: underline; }
.badge-new {
  display: inline-block;
  font-size: 0.65rem;
  background: var(--yellow);
  color: #000;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-weight: 600;
  margin-left: 0.4rem;
  vertical-align: middle;
}

/* Drilldown */
.drilldown-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.2rem; }
.btn-back {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.85rem;
  transition: all 0.2s;
}
.btn-back:hover { color: var(--text); border-color: var(--blue); }
.drilldown-title { font-size: 1.3rem; font-weight: 600; text-transform: capitalize; }
.drilldown-stats { display: flex; gap: 1rem; margin-bottom: 1.2rem; flex-wrap: wrap; }
.drilldown-controls { display: flex; gap: 0.8rem; margin-bottom: 1rem; flex-wrap: wrap; }
.search-input {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.85rem;
  flex: 1;
  min-width: 200px;
}
.search-input::placeholder { color: var(--text-muted); }
.sort-select, .filter-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.85rem;
}
.drilldown-table-info {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.pagination button {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.8rem;
  transition: all 0.2s;
}
.pagination button:hover { border-color: var(--blue); color: var(--text); }
.pagination button.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.pagination button:disabled { opacity: 0.3; cursor: default; }
.pagination .page-info { font-size: 0.8rem; color: var(--text-muted); }

/* Footer */
.footer {
  padding: 1rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
  .header { padding: 1rem; }
  .main { padding: 1rem; }
}
@media (max-width: 600px) {
  .competitor-cards { grid-template-columns: 1fr; }
  .summary-strip { flex-direction: column; }
}