:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #333333;
    --border-color: #dee2e6;
    --shadow-color: rgba(0,0,0,0.1);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--secondary-color);
}

.search-container {
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.search-input:focus {
    border-color: var(--secondary-color);
}

.table-container {
    background-color: var(--surface-color);
    border-radius: 12px;
    overflow: hidden;
    margin-top: 1rem;
}

.clinic-table {
    width: 100%;
    border-collapse: collapse;
}

.clinic-table th {
    background-color: #f1f3f5;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.clinic-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.clinic-table tbody tr:hover {
    background-color: #f8f9fa;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
    cursor: pointer;
    border: none;
}

.btn:hover {
    opacity: 0.85;
}

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

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

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
}

.shadow {
    box-shadow: 0 4px 6px var(--shadow-color);
}

.text-center {
    text-align: center;
}

.form-container {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 12px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.full-width {
    grid-column: 1 / -1;
}

.form-control {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.patient-summary {
    background-color: #e3f2fd;
    padding: 1rem 2rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--secondary-color);
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.detail-card {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.detail-card h3 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--primary-color);
}

.list-unstyled {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-unstyled li {
    margin-bottom: 0.5rem;
}

.visit-history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.visit-item {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.visit-date {
    font-weight: 600;
    color: var(--secondary-color);
    margin-right: 1rem;
}

.problem-source {
    font-weight: 600;
    margin-top: 1rem;
    color: var(--primary-color);
}

.problem-list {
    margin-bottom: 0.5rem;
}

.account-form-container {
    max-width: 400px;
    margin: 4rem auto;
    background-color: var(--surface-color);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px var(--shadow-color);
}

.account-form-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.mb-3 {
    margin-bottom: 1rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
}

.validation-message {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.validation-summary-errors {
    color: #721c24;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.validation-summary-errors ul {
    margin-bottom: 0;
    padding-left: 1.5rem;
}