/* EngineOS Admin Styles */

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #334155;
  --border: #475569;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --green: #10b981;
  --amber: #f59e0b;
  --red: #ef4444;
  --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Nav */
.admin-nav {
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: 24px;
}

.nav-brand a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.nav-links { display: flex; gap: 8px; flex: 1; }
.nav-links a {
  padding: 6px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.15s;
}
.nav-links a:hover, .nav-links a.active { background: var(--surface2); color: var(--text); }

.nav-user { display: flex; align-items: center; gap: 12px; font-size: 0.875rem; color: var(--text-muted); }
.btn-ghost { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.875rem; }
.btn-ghost:hover { color: var(--text); }

/* Main */
.admin-main { padding: 32px 24px; max-width: 1400px; margin: 0 auto; }

.dashboard-header { margin-bottom: 32px; }
.dashboard-header h1 { font-size: 1.75rem; font-weight: 700; }
.dashboard-subtitle { color: var(--text-muted); margin-top: 4px; font-size: 0.9rem; }

/* Metric Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.metric-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.metric-value { font-size: 2rem; font-weight: 700; }

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.chart-card h2 { font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; color: var(--text-muted); }
.chart-wide { grid-column: 1 / -1; }

.chart-container { height: 220px; position: relative; }

.dashboard-actions { display: flex; justify-content: flex-end; }

/* Buttons */
.btn-primary {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-full { width: 100%; }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
}
.btn-secondary:hover { background: var(--border); }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

/* Login Page */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 380px;
}
.login-card h1 { font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; text-align: center; }
.login-subtitle { color: var(--text-muted); font-size: 0.9rem; text-align: center; margin-bottom: 32px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 6px; }
.form-group input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--text);
  font-size: 0.9rem;
}
.form-group input:focus { outline: none; border-color: var(--primary); }

.form-error { color: var(--red); font-size: 0.8rem; margin-bottom: 12px; }
.login-footer { color: var(--text-muted); font-size: 0.75rem; text-align: center; margin-top: 16px; }