@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Source+Sans+3:wght@400;500;600&display=swap");

:root {
  --bg: #f4f6f8;
  --bg-ink: #0f172a;
  --ink: #0f172a;
  --muted: #6b7280;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-2: #0f172a;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(900px 480px at 12% -5%, #eef2f6 0%, transparent 55%),
    radial-gradient(760px 420px at 88% 0%, #e6edf7 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), #7aa7ff);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

.nav { display: flex; gap: 16px; align-items: center; font-size: 14px; }
.nav-note { color: var(--muted); font-size: 12px; }

.container { max-width: 1200px; margin: 0 auto; padding: 24px; }

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  padding: 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: 32px;
  margin: 0 0 8px;
}

.hero p { color: var(--muted); margin: 0 0 16px; }

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: #eef2f6;
  color: #334155;
  font-size: 12px;
}

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

.card + .card { margin-top: 18px; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 16px;
  border-radius: 14px;
  background: linear-gradient(180deg, #f8fafc, #ffffff);
  border: 1px solid #e2e8f0;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
}

.stat-label { color: var(--muted); font-size: 13px; }

.chart-card {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.chart-header { display: flex; justify-content: space-between; align-items: baseline; }
.chart-header h3 { margin: 0; font-family: var(--font-display); }
.chart-header p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.chart-bars { margin-top: 16px; display: grid; gap: 10px; }
.chart-bar { display: grid; grid-template-columns: 120px 1fr 64px; gap: 12px; align-items: center; }
.chart-bar-label { font-size: 13px; color: var(--muted); }
.chart-bar-track {
  height: 10px;
  background: #edf2f7;
  border-radius: 999px;
  overflow: hidden;
}
.chart-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #9ab6ff);
}
.chart-bar-value { font-weight: 600; font-size: 13px; text-align: right; }

.chart-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.chart-pill {
  padding: 8px 12px;
  background: #eef2f6;
  color: #334155;
  border-radius: 12px;
  font-size: 12px;
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 12px; background: #fff; }
th, td { border-bottom: 1px solid var(--border); padding: 10px; text-align: left; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }

form { display: grid; gap: 12px; }
label { font-size: 13px; color: var(--muted); }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-family: var(--font-body);
  font-size: 14px;
}
button {
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button.secondary {
  background: #1a2331;
}

.auth-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.auth-panel {
  padding: 20px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.auth-panel h2 { font-family: var(--font-display); margin-top: 0; }
.auth-aside {
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(160deg, #0f172a, #1e293b);
  color: #fff;
}
.auth-aside h3 { margin-top: 0; font-family: var(--font-display); }

.question { background: #fff; padding: 12px; border-radius: 4px; }
.progress { margin: 12px 0; }
.missing { color: #c00; }
.error { color: #c00; margin-bottom: 8px; }
.success { color: #0f7a3c; margin-bottom: 8px; }
.muted { color: var(--muted); }
pre { background: #fff; padding: 12px; overflow: auto; }
details { margin: 8px 0; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .auth-shell { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav { flex-wrap: wrap; justify-content: flex-end; }
  .stats-grid { grid-template-columns: 1fr; }
  .chart-bar { grid-template-columns: 1fr; gap: 6px; }
  .chart-bar-value { text-align: left; }
}