:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Forms */
.form-wrapper {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.form-wrapper h1 {
    font-size: 24px;
    margin-bottom: 8px;
}

.form-wrapper .subtitle {
    color: var(--gray-500);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--gray-500);
    font-size: 13px;
}

.phone-input {
    display: flex;
    align-items: center;
}

.phone-input .prefix {
    background: var(--gray-100);
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-weight: 500;
}

.phone-input input {
    border-radius: 0 var(--radius) var(--radius) 0;
    border-left: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #16a34a;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 18px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.alert-success {
    background: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    background: white;
    border-radius: var(--radius);
    border-collapse: collapse;
    overflow: hidden;
}

.table th {
    background: var(--gray-100);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
}

.table td {
    padding: 12px 16px;
    border-top: 1px solid var(--gray-200);
}

.table tr:hover {
    background: var(--gray-50);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background: white;
    margin: 15% auto;
    padding: 30px;
    border-radius: var(--radius);
    max-width: 600px;
    position: relative;
}

.modal-content .close {
    position: absolute;
    right: 15px;
    top: 10px;
    font-size: 28px;
    cursor: pointer;
    color: var(--gray-500);
}

.modal-content .close:hover {
    color: var(--gray-900);
}

.modal-content pre {
    background: var(--gray-100);
    padding: 15px;
    border-radius: var(--radius);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Responsive */
@media (max-width: 768px) {
    .form-wrapper {
        padding: 20px;
        margin: 20px auto;
    }
}