:root {
    --primary: #2c3e50;
    --primary-hover: #1a252f;
    --bg: #f4f6f9;
    --card-bg: #fff;
    --text: #2c3e50;
    --text-secondary: #7f8c8d;
    --border: #ecf0f1;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    --radius: 8px;
    --shadow: 0 4px 15px rgba(0,0,0,0.05);
}

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

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

/* Utilities */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    text-align: center;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.1);
}

.form-control.error {
    border-color: var(--danger);
}

.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.alert-success { background: #d4edda; color: #155724; border-left: 4px solid var(--success); }
.alert-error { background: #f8d7da; color: #721c24; border-left: 4px solid var(--danger); }

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    word-break: keep-all;
    line-height: 1.25;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }