:root {
    --primary-color: #2874A6;
    --primary-dark: #1B4F72;
    --secondary-color: #85C1E9;
    --success-color: #27AE60;
    --danger-color: #E74C3C;
    --warning-color: #F39C12;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-600: #6C757D;
    --gray-800: #343A40;
    --white: #FFFFFF;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--primary-color) !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
    color: var(--white) !important;
}

.nav-link {
    color: var(--white) !important;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--secondary-color) !important;
}

/* Cards */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: var(--white);
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    color: var(--primary-dark);
}

/* Floating Action Buttons */
.fab-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.fab {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.fab:hover {
    background-color: var(--primary-dark);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    color: var(--white);
}

.fab-secondary {
    background-color: var(--success-color);
}

.fab-secondary:hover {
    background-color: #229954;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* Tables */
.table-responsive {
    border-radius: 8px;
    overflow: hidden;
}

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

.table thead th {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    font-weight: 600;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--gray-100);
}

/* Forms */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 116, 166, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

/* Tabs */
.nav-tabs .nav-link {
    color: var(--gray-600) !important;
    background-color: rgba(0, 0, 0, 0.03);
    border: 1px solid transparent;
    border-bottom: none;
    margin-right: 4px;
    border-radius: 8px 8px 0 0;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color) !important;
    background-color: var(--white);
    border-color: rgba(0, 0, 0, 0.1);
    border-bottom: 3px solid var(--primary-color);
    font-weight: 600;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.02);
}

.nav-tabs .nav-link:hover {
    color: var(--primary-dark) !important;
    background-color: rgba(0, 0, 0, 0.05);
    border-color: transparent;
}

.tab-content {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

/* Patient Profile */
.patient-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 8px 8px 0 0;
    margin-bottom: 0;
}

.patient-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.info-item {
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.info-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 1.125rem;
    font-weight: 600;
}

/* Search Results */
.search-result-item {
    padding: 1rem;
    background-color: var(--white);
    margin-bottom: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.search-result-item:hover {
    background-color: var(--gray-100);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-card {
    width: 100%;
    max-width: 400px;
}

/* Badges */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-weight: 500;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .fab-container {
        bottom: 15px;
        right: 15px;
    }

    .fab {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .patient-header {
        padding: 1.5rem;
    }

    .patient-info-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

/* Checkup History Cards */
.checkup-card {
    border-left: 4px solid var(--primary-color);
}

.checkup-card.general {
    border-left-color: var(--primary-color);
}

.checkup-card.dental {
    border-left-color: var(--success-color);
}

.checkup-card.eye {
    border-left-color: var(--warning-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-600);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: 1rem;
}