:root {
  --bg: #0f1117;
  --panel: #1a1d27;
  --border: #2c3040;
  --text: #e6e8ef;
  --muted: #8a8fa3;
  --accent: #5b8cff;
  --fail: #e53e3e;
  --fail-dim: rgba(229, 62, 62, 0.13);
}

[hidden] { display: none !important; }

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 24px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

.controls select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-label {
  color: var(--muted);
  font-size: 0.85rem;
}

.card-value {
  font-size: 1.8rem;
  font-weight: 600;
}

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.tab-btn {
  background: transparent;
  color: var(--muted);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 8px 16px;
  font-size: 0.95rem;
  cursor: pointer;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

section.tab-panel {
  display: none;
}

section.tab-panel.active {
  display: grid;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 16px;
}

.chart-box {
  position: relative;
  width: 100%;
}

.chart-box-md {
  height: 220px;
}

.chart-box-sm {
  height: 180px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
}

.entry-exit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.panel-wide {
  grid-column: 1 / -1;
}

.heatmap-controls {
  margin-bottom: 12px;
}

.heatmap-controls select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
}

.heatmap-layout {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.heatmap-page-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 180px;
  max-width: 240px;
  max-height: 80vh;
  overflow-y: auto;
}

.heatmap-page-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font-size: 0.85rem;
  transition: border-color 0.15s, background 0.15s;
}

.heatmap-page-item:hover {
  border-color: var(--muted);
}

.heatmap-page-item.active {
  border-color: var(--accent);
  background: rgba(91, 140, 255, 0.08);
}

.heatmap-page-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.heatmap-page-stats {
  font-size: 0.75rem;
  color: var(--muted);
}

.heatmap-wrap {
  flex: 1;
  min-width: 0;
  max-height: 80vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0a0c12;
}

.heatmap-stage {
  position: relative;
  transform-origin: top left;
}

.heatmap-frame {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  background: #fff;
}

.heatmap-canvas {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
}

/* ── Login ── */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
}

.login-heading {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}

.login-sub {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 28px;
}

.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-field { display: flex; flex-direction: column; gap: 6px; }

.login-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.login-input {
  height: 44px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 14px;
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  width: 100%;
}

.login-input::placeholder { color: var(--muted); }

.login-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 140, 255, 0.15);
}

.login-error {
  font-size: 0.8rem;
  color: var(--fail);
  background: var(--fail-dim);
  border: 1px solid rgba(229, 62, 62, 0.3);
  border-radius: 6px;
  padding: 8px 12px;
  margin: 0;
}

.login-btn {
  height: 46px;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  color: #edf1f7;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.18s, transform 0.18s;
  margin-top: 4px;
}

.login-btn:hover:not(:disabled) { opacity: 0.9; transform: translateY(-1px); }
.login-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Logout button ── */

.logout-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  margin-left: 8px;
  transition: color 0.15s, border-color 0.15s;
}

.logout-btn:hover {
  color: var(--text);
  border-color: var(--muted);
}