:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --sidebar-w: 260px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, #1e1b4b 0%, #312e81 100%);
  color: #fff;
  padding: 1.5rem 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar .brand {
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 1rem;
}

.sidebar .brand h1 {
  font-size: 1.25rem;
  font-weight: 800;
}

.sidebar .brand p {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 0.25rem;
}

.sidebar nav a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.15s;
}

.sidebar nav a:hover,
.sidebar nav a.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-left: 3px solid var(--accent);
}

.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 2rem 2.5rem;
  max-width: 960px;
}

.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  color: #fff;
  border-radius: 1rem;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.hero h2 { font-size: 2rem; margin-bottom: 0.5rem; }
.hero p { opacity: 0.9; font-size: 1.05rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

.stat {
  text-align: center;
  padding: 1.25rem;
  background: var(--bg);
  border-radius: 0.5rem;
}

.stat .num { font-size: 1.75rem; font-weight: 800; color: var(--primary); }
.stat .label { font-size: 0.8rem; color: var(--muted); }

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green { background: #d1fae5; color: #065f46; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-yellow { background: #fef3c7; color: #92400e; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th { background: var(--bg); font-weight: 600; color: var(--muted); font-size: 0.75rem; text-transform: uppercase; }

code {
  background: #f1f5f9;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.85em;
  font-family: 'Consolas', monospace;
}

pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  font-size: 0.8rem;
  margin: 0.75rem 0;
}

.flow-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.flow-step .num {
  width: 2rem;
  height: 2rem;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 0.85rem;
}

ul { padding-left: 1.25rem; margin: 0.5rem 0; }
li { margin-bottom: 0.35rem; }

.footer-note {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
}

@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { 
    position: sticky; 
    top: 0;
    width: 100%; 
    height: auto;
    z-index: 100;
    padding: 0.75rem 0 0;
    display: flex;
    flex-direction: column;
  }
  .sidebar .brand {
    padding: 0 1.25rem 0.5rem;
    margin-bottom: 0;
    border-bottom: none;
  }
  .sidebar nav {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    -webkit-overflow-scrolling: touch;
  }
  .sidebar nav::-webkit-scrollbar {
    height: 4px;
  }
  .sidebar nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
  }
  .sidebar nav a {
    display: inline-block;
    border-left: none;
    border-bottom: 3px solid transparent;
    padding: 0.5rem 1rem;
  }
  .sidebar nav a:hover, .sidebar nav a.active {
    border-left-color: transparent;
    border-bottom-color: var(--accent);
  }
  .main { margin-left: 0; padding: 1rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

@media print {
  .sidebar { display: none; }
  .main { margin-left: 0; }
}