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

:root {
    --primary-color: #2c5aa0;
    --secondary-color: #4a90e2;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
    --medium-text: #6c757d;
    --light-text: #adb5bd;
    --white: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    font-family: var(--font-family);
    background: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

.header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo i {
    font-size: 1.8rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.dashboard-title {
    color: var(--dark-text);
    font-size: 1.5rem;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: var(--medium-text);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.system-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success-color);
    font-weight: 500;
}

.status-online {
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.current-time {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--medium-text);
    font-size: 1.1rem;
}

.dashboard-container {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    color: var(--dark-text);
    font-weight: 600;
    font-size: 1.2rem;
}

.vitals-overview {
    grid-column: span 2;
}

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

.vital-card {
    background: linear-gradient(135deg, var(--white) 0%, #f8f9fa 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.vital-card:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.vital-card.heart-rate { border-left: 4px solid var(--danger-color); }
.vital-card.oxygen { border-left: 4px solid var(--info-color); }
.vital-card.temperature { border-left: 4px solid var(--warning-color); }
.vital-card.blood-pressure { border-left: 4px solid var(--primary-color); }

.vital-icon {
    font-size: 2rem;
    padding: 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.heart-rate .vital-icon { background: rgba(220, 53, 69, 0.1); color: var(--danger-color); }
.oxygen .vital-icon { background: rgba(23, 162, 184, 0.1); color: var(--info-color); }
.temperature .vital-icon { background: rgba(255, 193, 7, 0.1); color: var(--warning-color); }
.blood-pressure .vital-icon { background: rgba(44, 90, 160, 0.1); color: var(--primary-color); }

.vital-info {
    flex: 1;
}

.vital-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.25rem;
}

.vital-label {
    color: var(--medium-text);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.vital-trend {
    font-weight: 600;
    font-size: 0.85rem;
}

.trend-up { color: var(--success-color); }
.trend-down { color: var(--danger-color); }
.trend-stable { color: var(--medium-text); }

.chart-section {
    grid-column: span 2;
}

.chart-container {
    position: relative;
    height: 300px;
    margin: 1rem 0;
}

.chart-controls select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--white);
    color: var(--dark-text);
}

.gauges-section .gauges-grid {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
}

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

.gauge-label {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--dark-text);
}

.costs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.cost-item {
    text-align: center;
    padding: 1rem;
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--white) 100%);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.cost-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
    margin-bottom: 0.5rem;
}

.cost-label {
    color: var(--medium-text);
    font-size: 0.9rem;
}

.patient-table {
    grid-column: span 2;
}

.table-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.table-controls input,
.table-controls select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--white);
}

.table-container {
    overflow-x: auto;
    margin-top: 1rem;
}

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

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: var(--light-bg);
    font-weight: 600;
    color: var(--dark-text);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

th:hover {
    background: #e9ecef;
}

tr:hover {
    background: rgba(74, 144, 226, 0.05);
}

.status-critical { color: var(--danger-color); font-weight: 600; }
.status-stable { color: var(--success-color); font-weight: 600; }
.status-recovery { color: var(--warning-color); font-weight: 600; }

.footer {
    background: var(--dark-text);
    color: var(--white);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
}

.footer-stats {
    display: flex;
    gap: 2rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .header-left {
        flex-direction: column;
        gap: 1rem;
    }
    
    .dashboard-container {
        padding: 1rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .vitals-overview,
    .chart-section,
    .patient-table {
        grid-column: span 1;
    }
    
    .vitals-grid {
        grid-template-columns: 1fr;
    }
    
    .costs-grid {
        grid-template-columns: 1fr;
    }
    
    .footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning-color);
    color: #856404;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}