/* Matches the autostats.com dark theme so the iframe content blends seamlessly. */
:root {
  --bg-color:    #0f172a;
  --panel-bg:    #1e293b;
  --text-main:   #f8fafc;
  --text-muted:  #94a3b8;
  --accent:      #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.5);
  --border:      #334155;
  --success:     #10b981;
  --danger:      #ef4444;
  --warn:        #f59e0b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

h2 {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
}
h3 {
  margin: 18px 0 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
p, .muted { color: var(--text-muted); }
.muted    { color: var(--text-muted); margin: 0 0 12px; }
.small    { font-size: 0.8125rem; }
.mono     { font-family: ui-monospace, SF Mono, Menlo, monospace; }
.hidden   { display: none !important; }

/* ─────────────────────── upload ─────────────────────── */
.file-drop {
  display: block;
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.15s, background 0.15s;
}
.file-drop:hover    { border-color: var(--accent); background: rgba(59, 130, 246, 0.06); }
.file-drop.dragover { border-color: var(--accent); background: rgba(59, 130, 246, 0.12); }
.file-drop input    { display: none; }

/* ─────────────────────── form ─────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 12px 0 4px;
}
.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.form-grid label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  grid-column: 1 / -1;
  color: var(--text-main);
}
select, input[type="range"] {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 8px;
  padding: 9px 10px;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
}
select:focus, input:focus { border-color: var(--accent); }
input[type="range"] { padding: 0; accent-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; }

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.row input[type="range"] { flex: 1; }

/* ─────────────────────── buttons ─────────────────────── */
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: filter 0.15s, background 0.15s, border-color 0.15s;
}
.btn.primary {
  background: var(--accent);
  color: white;
}
.btn.primary:hover     { filter: brightness(1.1); }
.btn.primary:disabled  { background: #475569; color: #cbd5e1; cursor: not-allowed; filter: none; }
.btn.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-main);
}
.btn.ghost:hover { background: rgba(255, 255, 255, 0.04); border-color: var(--accent); }

/* ─────────────────────── status / errors ─────────────────────── */
.status, .error, .banner {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.875rem;
  margin-top: 12px;
}
.status {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  border: 1px solid rgba(59, 130, 246, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.status .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}
.banner {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
  margin: 12px 0 8px;
  font-weight: 500;
}

/* ─────────────────────── metrics table ─────────────────────── */
.table-wrap { overflow-x: auto; margin-bottom: 8px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
th, td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(255, 255, 255, 0.02);
}
td.best { color: var(--success); font-weight: 600; }

/* ─────────────────────── support note ─────────────────────── */
.support-note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8125rem;
}
.support-note a { color: var(--accent); text-decoration: none; }
.support-note a:hover { text-decoration: underline; }

/* ─────────────────────── charts ─────────────────────── */
.chart {
  width: 100%;
  height: 380px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
}

/* ─────────────────────── responsive ─────────────────────── */
@media (max-width: 640px) {
  .container { padding: 14px 12px 40px; }
  .form-grid { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .actions .btn { width: 100%; }
  .chart { height: 320px; }
  h2 { font-size: 0.9375rem; }
}