:root {
    --primary: #FF6B00;
    --primary-hover: #e55e00;
    --background: #050505;
    --surface: #121212;
    --surface-border: #333333;
    --text: #F0F0F0;
    --text-muted: #A0A0A0;
    --error: #ff4444;
    --success: #00C851;
}

* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    font-family: 'Segoe UI', system-ui, sans-serif; 
}

body {
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
}

/* Nav */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--surface-border);
    background: var(--surface);
}

.logo { 
    font-weight: 800; 
    font-size: 1.5rem; 
    letter-spacing: 1px; 
}

.highlight { 
    color: var(--primary); 
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

.btn-outline:active {
    transform: scale(0.98);
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    border: none;
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 1rem;
    transition: background 0.2s;
}

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.98);
}

/* Layout */
.container { 
    max-width: 800px; 
    margin: 2rem auto; 
    padding: 0 1rem; 
}

.form-header { 
    text-align: center; 
    margin-bottom: 2rem; 
}

.subtitle { 
    color: var(--text-muted); 
}

.form-section {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--surface-border);
    margin-bottom: 1.5rem;
}

.form-section h2 {
    color: var(--primary);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--surface-border);
    padding-bottom: 0.5rem;
}

/* Form Inputs */
.grid-2 { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 1rem; 
}

.form-group { 
    margin-bottom: 1rem; 
}

label { 
    display: block; 
    margin-bottom: 0.5rem; 
    font-size: 0.9rem; 
    color: var(--text-muted); 
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    background: #000;
    border: 1px solid var(--surface-border);
    color: white;
    border-radius: 4px;
    transition: border-color 0.3s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 5px rgba(255, 107, 0, 0.3);
}

input::placeholder, textarea::placeholder {
    color: #555;
}

/* Checkboxes */
.checkbox-group { 
    display: flex; 
    gap: 1.5rem; 
    margin-bottom: 1rem; 
    flex-wrap: wrap; 
}

.checkbox-container { 
    display: flex; 
    align-items: center; 
    cursor: pointer; 
}

.checkbox-container input { 
    width: auto; 
    margin-right: 0.5rem; 
    accent-color: var(--primary); 
    cursor: pointer;
}

/* Messages */
.hidden { 
    display: none; 
}

#form-message {
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
}

.error-msg { 
    background: rgba(255, 68, 68, 0.1); 
    border: 1px solid var(--error); 
    color: var(--error); 
}

.success-msg { 
    background: rgba(0, 200, 81, 0.1); 
    border: 1px solid var(--success); 
    color: var(--success); 
}

/* FHIR Panel */
.fhir-panel {
    background: var(--surface);
    border: 2px solid var(--primary);
    border-radius: 8px;
    margin-top: 2rem;
    padding: 1.5rem;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fhir-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--surface-border);
}

.fhir-header h3 {
    color: var(--primary);
    font-size: 1.25rem;
    margin: 0;
}

.close-fhir {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    transition: color 0.2s;
}

.close-fhir:hover {color: var(--primary);
}
.fhir-content {
display: flex;
flex-direction: column;
gap: 1rem;
}
.fhir-summary {
background: rgba(255, 107, 0, 0.05);
padding: 1rem;
border-radius: 4px;
border-left: 3px solid var(--primary);
}
.fhir-stat {
display: flex;
gap: 0.5rem;
margin-bottom: 0.5rem;
font-size: 0.95rem;
}
.fhir-stat:last-child {
margin-bottom: 0;
}
.stat-label {
color: var(--text-muted);
font-weight: 600;
}
.stat-value {
color: var(--text);
font-family: 'Courier New', monospace;
}
.fhir-actions {
display: flex;
gap: 1rem;
}
.fhir-actions .btn-outline,
.fhir-actions .btn-primary {
flex: 1;
margin: 0;
}
.fhir-json {
background: #000;
border: 1px solid var(--surface-border);
border-radius: 4px;
padding: 1rem;
overflow-x: auto;
max-height: 400px;
font-family: 'Courier New', monospace;
font-size: 0.85rem;
color: #00ff00;
margin-top: 0.5rem;
}
.fhir-json::-webkit-scrollbar {
width: 8px;
height: 8px;
}
.fhir-json::-webkit-scrollbar-track {
background: var(--background);
}
.fhir-json::-webkit-scrollbar-thumb {
background: var(--primary);
border-radius: 4px;
}
/* Mobile */
@media (max-width: 768px) {
.navbar {
flex-direction: column;
gap: 1rem;
padding: 1rem;
}
.nav-actions {
    width: 100%;
    justify-content: center;
}
}
@media (max-width: 600px) {
.grid-2 {
grid-template-columns: 1fr;
}
.fhir-actions {
    flex-direction: column;
}

.fhir-stat {
    flex-direction: column;
    gap: 0.25rem;
}

.checkbox-group {
    flex-direction: column;
    gap: 0.75rem;
}
}