* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

a {
  color: inherit;
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.shell {
  width: min(1100px, 100%);
}

.card {
  background: #111827;
  border: 1px solid #1f2937;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
}

.auth-grid,
.dashboard-grid {
  display: grid;
  gap: 20px;
}

.auth-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.dashboard-grid {
  grid-template-columns: 1.2fr 0.8fr;
}

.muted {
  color: #94a3b8;
}

.title {
  margin: 0 0 12px;
  font-size: 28px;
}

.subtitle {
  margin: 0 0 24px;
  color: #94a3b8;
}

.form {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 14px;
  color: #cbd5e1;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: #0b1220;
  color: #f8fafc;
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  background: #2563eb;
}

button.secondary {
  background: #475569;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  background: #0b1220;
  border: 1px solid #1e293b;
  border-radius: 12px;
  padding: 16px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  margin-top: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid #1f2937;
}

th {
  color: #94a3b8;
  font-size: 13px;
  font-weight: 600;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge-buy {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.badge-sell {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.badge-hold {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}

.alert {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(239, 68, 68, 0.14);
  color: #fecaca;
}

.success {
  background: rgba(16, 185, 129, 0.14);
  color: #bbf7d0;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 12px;
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}