* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Arial, sans-serif; }
body { background: linear-gradient(135deg, #667eea, #764ba2); min-height: 100vh; padding: 20px; }
.container { max-width: 600px; margin: 40px auto; }
.container-wide { max-width: 1300px; margin: 20px auto; }
.card { background: #fff; border-radius: 12px; padding: 30px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); margin-bottom: 20px; }
.card h1, .card h3 { color: #333; margin-bottom: 15px; }
.subtitle { color: #777; margin-bottom: 20px; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; color: #444; font-weight: 600; font-size: 14px; }
.form-group input, .form-group textarea {
    width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 6px;
    font-size: 14px; transition: border 0.2s;
}
.form-group input:focus, .form-group textarea:focus { border-color: #667eea; outline: none; }
.btn {
    display: inline-block; padding: 10px 20px; border: none; border-radius: 6px;
    font-size: 14px; cursor: pointer; text-decoration: none; margin-right: 5px;
}
.btn-primary { background: #667eea; color: #fff; }
.btn-primary:hover { background: #5568d3; }
.btn-success { background: #27ae60; color: #fff; }
.btn-success:hover { background: #229954; }
.btn-danger { background: #e74c3c; color: #fff; }
.btn-secondary { background: #95a5a6; color: #fff; }
.alert { padding: 12px; border-radius: 6px; margin-bottom: 15px; font-size: 14px; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

.navbar { display: flex; justify-content: space-between; align-items: center; background: #fff; padding: 15px 25px; border-radius: 12px; margin-bottom: 20px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.navbar h2 { color: #333; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 20px; }
.stat-card { background: #fff; padding: 25px; border-radius: 12px; text-align: center; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.stat-card h3 { font-size: 36px; color: #667eea; }
.stat-card p { color: #777; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
table th { background: #667eea; color: #fff; padding: 10px; text-align: left; }
table td { padding: 10px; border-bottom: 1px solid #eee; }
table tr:hover { background: #f9f9f9; }

.filter-form { display: flex; gap: 15px; align-items: flex-end; flex-wrap: wrap; }
.filter-form .form-group { margin-bottom: 0; }

a { color: #667eea; }