* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #f5f5f5; color: #333; line-height: 1.6; }
a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1000px; margin: 0 auto; padding: 20px; }
.header { background: #1e293b; color: #fff; padding: 16px 0; margin-bottom: 24px; }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.header h1 { font-size: 1.25rem; }
.header a { color: #94a3b8; }

/* Cards */
.card { background: #fff; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); padding: 20px; margin-bottom: 16px; }
.card h2 { font-size: 1.1rem; margin-bottom: 12px; color: #1e293b; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #e2e8f0; }
th { background: #f8fafc; font-weight: 600; color: #64748b; }
tr:hover { background: #f8fafc; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 0.9rem; color: #475569; }
.form-group input, .form-group select { width: 100%; padding: 8px 12px; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 0.95rem; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }

/* Buttons */
.btn { display: inline-block; padding: 8px 16px; border-radius: 6px; font-size: 0.9rem; cursor: pointer; border: none; font-weight: 500; }
.btn-primary { background: #2563eb; color: #fff; }
.btn-primary:hover { background: #1d4ed8; text-decoration: none; }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; text-decoration: none; }
.btn-secondary { background: #64748b; color: #fff; }
.btn-secondary:hover { background: #475569; text-decoration: none; }
.btn-success { background: #16a34a; color: #fff; }
.btn-success:hover { background: #15803d; text-decoration: none; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-group { display: flex; gap: 8px; }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

/* Status badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.badge-active { background: #dcfce7; color: #166534; }
.badge-inactive { background: #fee2e2; color: #991b1b; }

/* Login */
.login-wrapper { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 100%; max-width: 400px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat { text-align: center; padding: 16px; }
.stat-value { font-size: 2rem; font-weight: 700; color: #1e293b; }
.stat-label { font-size: 0.8rem; color: #64748b; }