:root {
    /* Color Palette */
    --primary-color: #11a1c7;
    --primary-color-rgb: 17, 161, 199;
    --secondary-color: #0D829F;
    --accent-color: #F9A826;
    --light-color: #E6F7FB;
    --bg-color: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --dark-bg-color: #1a1a1a;
    --dark-text-color: #ffffff;
    --dark-border-color: #2d3748;
    --dark-text-muted: #94A3B8;
    --dark-input-bg: #2d2d2d;
    --dark-card-bg: #242424;
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;

    /* Form specific variables */
    --form-bg: var(--bs-body-bg);
    --form-text: var(--bs-body-color);
    --form-border: var(--bs-border-color);
    --form-focus-ring: rgba(var(--bs-primary-rgb), 0.25);
    --form-disabled-bg: var(--bs-secondary-bg);
    --form-disabled-text: var(--bs-secondary-color);
    --form-placeholder: var(--bs-secondary-color);
}

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

/* Base */
body {
    font-family: var(--font-secondary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    height: 64px;
    background: white;
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
}

.header-logo img {
    height: 32px;
    width: auto;
}

.header-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-left: 48px;
    flex: 1;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 8px;
}

.nav-item {
    height: 64px;
}

.nav-link {
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 16px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    position: relative;
}

.nav-link:hover {
    color: #1E293B;
}

.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--primary-color);
}

/* Main Content */
.app-main {
    flex: 1;
    background: #F8FAFC;
    padding: 24px;
}

/* Dark Mode */
.dark-mode {
    background-color: var(--dark-bg-color);
    color: var(--dark-text-color);
}

.dark-mode .app-header {
    background: var(--dark-bg-color);
    border-color: var(--dark-border-color);
}

.dark-mode .nav-link {
    color: var(--dark-text-muted);
}

.dark-mode .nav-link:hover {
    color: var(--dark-text-color);
}

.dark-mode .nav-link.active {
    color: var(--primary-color);
}

.dark-mode .app-main {
    background: #111827;
}

/* Dark mode form controls */
.dark-mode .form-control,
.dark-mode .form-select,
.dark-mode input[type="text"],
.dark-mode input[type="number"],
.dark-mode textarea {
    background-color: var(--dark-input-bg);
    border-color: var(--dark-border-color);
    color: var(--dark-text-color);
}

.dark-mode .form-control:focus,
.dark-mode .form-select:focus,
.dark-mode input[type="text"]:focus,
.dark-mode input[type="number"]:focus,
.dark-mode textarea:focus {
    background-color: var(--dark-input-bg);
    border-color: var(--primary-color);
    color: var(--dark-text-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color-rgb), 0.25);
}

/* Dark mode workflow conditions */
.dark-mode .workflow-conditions {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border-color);
}

.dark-mode .workflow-condition {
    background-color: var(--dark-input-bg);
    border-color: var(--dark-border-color);
}

.dark-mode .workflow-condition-header {
    background-color: var(--dark-card-bg);
    border-bottom: 1px solid var(--dark-border-color);
}

.dark-mode .workflow-condition-body {
    background-color: var(--dark-input-bg);
}

/* Dark mode tables */
.dark-mode .table {
    color: var(--dark-text-color);
    border-color: var(--dark-border-color);
}

.dark-mode .table thead th {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border-color);
}

.dark-mode .table td {
    border-color: var(--dark-border-color);
}

/* Dark mode buttons */
.dark-mode .btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.dark-mode .btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--dark-text-color);
}

.dark-mode .btn-light {
    background-color: var(--dark-input-bg);
    border-color: var(--dark-border-color);
    color: var (--dark-text-color);
}

.dark-mode .btn-light:hover {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border-color);
    color: var(--dark-text-color);
}

.dark-mode .card,
.dark-mode .card-body,
.dark-mode .card-header,
.dark-mode .card-footer {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border-color);
    color: var(--dark-text-color);
}

.dark-mode .card-header {
    border-bottom-color: var(--dark-border-color);
}

.dark-mode .card-footer {
    border-top-color: var(--dark-border-color);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Forms */
.form-control,
.form-select {
    background-color: var(--form-bg);
    color: var(--form-text);
    border: 1px solid var(--form-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--bs-primary);
    background-color: var(--form-bg);
    color: var(--form-text);
    box-shadow: 0 0 0 0.25rem var(--form-focus-ring);
}

.form-control:disabled,
.form-select:disabled {
    background-color: var(--form-disabled-bg);
    color: var(--form-disabled-text);
    border-color: var(--form-border);
}

.form-control::placeholder {
    color: var(--form-placeholder);
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--form-text);
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--bs-secondary-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Dark Mode Form Controls */
.dark-mode {
    --form-bg: var(--dark-input-bg, #1e1e1e);
    --form-text: var(--dark-text-color, #e2e8f0);
    --form-border: var(--dark-border-color, #2d3748);
    --form-focus-ring: rgba(var(--bs-primary-rgb), 0.15);
    --form-disabled-bg: var(--dark-card-bg, #181818);
    --form-disabled-text: var(--dark-text-muted, #94a3b8);
    --form-placeholder: var(--dark-text-muted, #94a3b8);
}

.dark-mode .form-control:focus,
.dark-mode .form-select:focus {
    background-color: var(--form-bg);
    border-color: var(--bs-primary);
    color: var(--form-text);
}

/* Card styling for forms */
.card {
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: 12px;
}

.dark-mode .card {
    background-color: var(--dark-card-bg, #242424);
    border-color: var(--dark-border-color, #2d3748);
}

.card-body {
    background-color: var(--bs-body-bg);
}

.dark-mode .card-body {
    background-color: var(--dark-card-bg, #242424);
}

/* Form validation styles */
.invalid-feedback {
    color: var(--bs-danger);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.form-control.is-invalid {
    border-color: var(--bs-danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-danger-rgb), 0.25);
}

.dark-mode .form-control.is-invalid {
    border-color: #ef4444;
}

.dark-mode .form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.25rem rgba(239, 68, 68, 0.15);
}

/* Tables */
.table {
    color: var(--text-color);
    border-color: var(--dark-border-color);
}

/* Loading Spinner */
.loading-overlay {
    background-color: rgba(255, 255, 255, 0.9);
}

/* Dark Mode Toggle */
#darkModeToggle {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

#darkModeToggle:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* Footer */
.footer {
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

/* Dropdowns */
.dropdown-menu {
    border: none;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    border-radius: 0.5rem;
    padding: 0.5rem;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--light-color);
}

/* Buttons */
.btn {
    border-radius: 9999px;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

/* Alerts */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.alert-dismissible .btn-close {
    padding: 1.25rem;
}

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    padding: 1rem 1.5rem;
    color: var(--text-muted);
    background-color: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.table td {
    padding: 1rem 1.5rem;
    vertical-align: middle;
    border-bottom: 1px solid #e9ecef;
}

.table tbody tr {
    transition: all 0.3s ease;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 9999px;
    border: 2px solid var(--bg-color);
}

/* Modal Dark Mode */
body.dark-mode .modal-content {
    background-color: #2d3436;
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .modal-footer {
    border-top-color: rgba(255, 255, 255, 0.1);
}

/* Toast Dark Mode */
body.dark-mode .toast {
    background-color: #2d3436;
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .toast-header {
    background-color: #1a1f24;
    color: var(--dark-text-color);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

/* List Group Dark Mode */
body.dark-mode .list-group-item {
    background-color: #2d3436;
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--dark-text-color);
}

body.dark-mode .list-group-item:hover {
    background-color: #3d4852;
}

/* Input Group Dark Mode */
body.dark-mode .input-group-text {
    background-color: #1a1f24;
    border-color: #4a5568;
    color: var(--dark-text-color);
}

/* Button Dark Mode Refinements */
body.dark-mode .btn-light {
    background-color: #3d4852;
    border-color: #4a5568;
    color: var(--dark-text-color);
}

body.dark-mode .btn-light:hover {
    background-color: #4a5568;
    border-color: #4a5568;
    color: var(--dark-text-color);
}

body.dark-mode .btn-outline-light {
    border-color: #4a5568;
    color: var (--dark-text-color);
}

body.dark-mode .btn-outline-light:hover {
    background-color: #3d4852;
    border-color: #4a5568;
    color: var(--dark-text-color);
}

/* Recommendations page overrides */
.recommendations-page {
    --recommendations-bg: var(--bg-color);
    --recommendations-text: var(--text-color);
    --recommendations-border: var(--border-color);
    
    background-color: var(--recommendations-bg);
    color: var(--recommendations-text);
}

.dark-mode .recommendations-page {
    --recommendations-bg: var(--dark-bg-color);
    --recommendations-text: var(--dark-text-color);
    --recommendations-border: var(--dark-border-color);
}

.patient-contacts {
    margin-top: 0.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    font-size: 0.9rem;
}

.contact-item i {
    color: #4a5568;
}

/* Dark mode contact information */
.dark-mode .contact-item {
    color: #9ca3af;
}

.dark-mode .contact-item i {
    color: #d1d5db;
}

/* Form Controls - Light Mode */
.form-control,
.form-select,
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
textarea {
    background-color: var(--bs-body-bg, #fff);
    border: 1px solid var(--bs-border-color, #dee2e6);
    color: var(--bs-body-color, #212529);
    border-radius: 0.375rem;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.form-control:focus,
.form-select:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    background-color: var(--bs-body-bg, #fff);
    border-color: var(--bs-primary, #0d6efd);
    color: var(--bs-body-color, #212529);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb, 13, 110, 253), 0.25);
}

.form-label {
    color: var(--bs-body-color, #212529);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--bs-secondary-color, #6c757d);
}

/* Tables - Light Mode */
.table {
    background-color: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #212529);
}

.table > thead {
    background-color: var(--bs-gray-100, #f8f9fa);
}

.table > thead th {
    color: var(--bs-gray-700, #495057);
    font-weight: 600;
    border-bottom: 2px solid var(--bs-border-color, #dee2e6);
}

.table > tbody tr {
    border-bottom: 1px solid var(--bs-border-color, #dee2e6);
}

/* Dark Mode Overrides */
.dark-mode .form-control,
.dark-mode .form-select,
.dark-mode input[type="text"],
.dark-mode input[type="number"],
.dark-mode input[type="email"],
.dark-mode input[type="password"],
.dark-mode textarea {
    background-color: var(--dark-input-bg, #2d3748);
    border-color: var(--dark-border-color, #4a5568);
    color: var(--dark-text-color, #e2e8f0);
}

.dark-mode .form-control:focus,
.dark-mode .form-select:focus,
.dark-mode input[type="text"]:focus,
.dark-mode input[type="number"]:focus,
.dark-mode input[type="email"]:focus,
.dark-mode input[type="password"]:focus,
.dark-mode textarea:focus {
    background-color: var(--dark-input-bg, #2d3748);
    border-color: var(--primary-color, #11a1c7);
    color: var(--dark-text-color, #e2e8f0);
    box-shadow: 0 0 0 0.2rem rgba(17, 161, 199, 0.25);
}

.dark-mode .form-label {
    color: var(--dark-text-color, #e2e8f0);
}

.dark-mode .form-text {
    color: var(--dark-text-muted, #94a3b8);
}

.dark-mode .table {
    background-color: var(--dark-bg-color, #1a202c);
    color: var(--dark-text-color, #e2e8f0);
}

.dark-mode .table > thead {
    background-color: var(--dark-card-bg, #2d3748);
}

.dark-mode .table > thead th {
    color: var(--dark-text-color, #e2e8f0);
    border-bottom-color: var(--dark-border-color, #4a5568);
}

.dark-mode .table > tbody tr {
    border-bottom-color: var(--dark-border-color, #4a5568);
}

.dark-mode .table tbody tr:nth-of-type(odd) {
    background-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.075);
}