/* Dark minimalist theme */
:root {
  --bg-start: #0f172a; /* slate-900 */
  --bg-end: #111827;   /* gray-900 */
  --panel: #0b1220;    /* dark panel */
  --card: #0f1a2e;
  --border: #24324a;
  --text: #e5e7eb;     /* gray-200 */
  --muted: #94a3b8;    /* slate-400 */
  --green: #22c55e;
  --red: #ef4444;
  --primary: #3b82f6;
  --accent: #00ffc6;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-start), var(--bg-end)) fixed;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

h1 { margin: 0 0 4px; font-size: 24px; }
.subheader { margin: 0; color: var(--muted); }

.header-actions { display: flex; gap: 10px; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

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

.card-title { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.card-value { font-size: 28px; margin-top: 6px; }

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

.panel-header { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.panel-header h2 { margin: 0; font-size: 16px; }

.table { width: 100%; }
.table-row { display: grid; grid-template-columns: 1fr 1fr; }
.table-header { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.table-row .cell { padding: 12px 16px; border-bottom: 1px solid var(--border); }

.footer { margin-top: 24px; color: var(--muted); }
.footer a { color: var(--text); }

.btn {
  background: var(--primary);
  color: white;
  border: 1px solid #2c5fb5;
  border-radius: 8px;
  padding: 10px 14px;
  text-decoration: none;
  font-weight: 600;
  transition: transform .15s ease, box-shadow .15s ease, background .2s ease;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(59,130,246,0.15); }
.btn:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  border-color: var(--border);
}

.green { color: var(--green); }
.red { color: var(--red); }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.login-container { display: grid; place-items: center; height: 100vh; }
.login-card {
  width: 100%; max-width: 380px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px; padding: 22px;
}
.login-card h1 { margin: 0 0 6px; font-size: 20px; }

label { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
input[type="password"], input[type="text"] {
  width: 100%;
  background: #0a1220;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

.error { background: rgba(239, 68, 68, 0.15); border: 1px solid rgba(239, 68, 68, 0.35); color: #fecaca; padding: 10px 12px; border-radius: 8px; margin: 8px 0; }

/* Chart */
.chart-wrap { width: 100%; height: 300px; padding: 8px 0; position: relative; }
.chart-svg { width: 100%; height: 100%; display: block; }
.chart-tooltip {
  position: absolute;
  background: rgba(17, 24, 39, 0.95);
  border: 1px solid rgba(36, 50, 74, 0.8);
  color: var(--text);
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 8px;
  pointer-events: none;
  white-space: nowrap;
}