:root {
  --bg: #f5f5f5;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #666666;
  --border: #e0e0e0;
  --primary: #7c4dff;
  --primary-hover: #651fff;
  --danger: #e53935;
  --danger-hover: #c62828;
  --success: #43a047;
  --warning: #ffa726;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

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

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

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

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
}

header h1 { font-size: 20px; font-weight: 600; }

header nav { display: flex; gap: 8px; }

header nav a {
  text-decoration: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  transition: all 0.2s;
}

header nav a:hover, header nav a.active {
  color: var(--primary);
  background: rgba(124, 77, 255, 0.08);
}

header .user-info { display: flex; align-items: center; gap: 12px; font-size: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-success { background: var(--success); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card { text-align: center; }
.stat-card .value { font-size: 32px; font-weight: 700; color: var(--primary); }
.stat-card .label { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

table th, table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

table th { font-weight: 600; color: var(--text-secondary); font-size: 13px; }
table tr:hover { background: rgba(0,0,0,0.02); }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.badge-pending { background: #fff3e0; color: #e65100; }
.badge-confirmed { background: #e8f5e9; color: #2e7d32; }
.badge-rejected { background: #ffebee; color: #c62828; }
.badge-unused { background: #e3f2fd; color: #1565c0; }
.badge-used { background: #f3e5f5; color: #6a1b9a; }

.login-box {
  max-width: 400px;
  margin: 120px auto;
}

.login-box h2 { text-align: center; margin-bottom: 24px; }
.login-box .form-group { margin-bottom: 16px; }

.form-group label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 500; color: var(--text-secondary); }

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--primary);
}

.actions { display: flex; gap: 8px; margin-top: 16px; }

.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius);
  color: white;
  font-size: 14px;
  z-index: 1000;
  animation: slideIn 0.3s ease;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.endpoint { margin-bottom: 24px; }
.endpoint .method {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-right: 8px;
}

.method-get { background: #e8f5e9; color: #2e7d32; }
.method-post { background: #e3f2fd; color: #1565c0; }
.method-put { background: #fff3e0; color: #e65100; }
.method-delete { background: #ffebee; color: #c62828; }

.endpoint .path { font-family: monospace; font-size: 14px; color: var(--text); }