:root {
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --purple-color: #9C27B0;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-elevated: 0 4px 8px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: 80px;
}

.app-header {
    background: linear-gradient(135deg, var(--primary-color), #1976D2);
    color: white;
    padding: var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-elevated);
}

.app-header h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.alert-button {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: var(--spacing-sm);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
}

.alert-button:hover {
    background: rgba(255,255,255,0.3);
}

.alert-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.alert-count.hidden {
    display: none;
}

.app-main {
    padding: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.card-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), #1976D2);
    border-radius: 50%;
    color: white;
}

.card-content h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.quick-actions {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.quick-actions h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.action-btn {
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-content: center;
}

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

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

.action-btn.tertiary {
    background: var(--purple-color);
    color: white;
}

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
}

.add-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.add-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-elevated);
}

.items-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.item-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    position: relative;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.item-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.item-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.item-action-btn {
    background: none;
    border: none;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.item-action-btn:hover {
    background: var(--background-color);
    color: var(--text-primary);
}

.item-action-btn.danger:hover {
    background: var(--danger-color);
    color: white;
}

.item-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.item-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.empty-action-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.empty-action-btn:hover {
    background: #1976D2;
    transform: translateY(-2px);
}

.emergency-quick-call {
    margin-bottom: var(--spacing-lg);
}

.emergency-call-btn {
    width: 100%;
    background: var(--danger-color);
    color: white;
    border: none;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: all 0.2s;
}

.emergency-call-btn:hover {
    background: #d32f2f;
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.emergency-contacts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.emergency-contact-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.contact-call-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.contact-call-btn:hover {
    background: #388E3C;
}

.health-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.metric-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.metric-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--success-color), #388E3C);
    border-radius: 50%;
    color: white;
}

.metric-info h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.metric-info p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.health-metrics-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.health-metric-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.metric-date {
    font-weight: 600;
    color: var(--text-primary);
}

.metric-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

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

.metric-value-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.metric-value-number {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.communication-container {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.messages-list {
    max-height: 500px;
    overflow-y: auto;
}

.message-card {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.message-card:last-child {
    border-bottom: none;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.message-sender {
    font-weight: 600;
    color: var(--text-primary);
}

.message-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.message-subject {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.message-content {
    color: var(--text-secondary);
    line-height: 1.5;
}

.message-card.unread {
    background: rgba(33, 150, 243, 0.05);
    border-left: 4px solid var(--primary-color);
}

.faq-section {
    margin-top: var(--spacing-xl);
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.faq-section h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: var(--background-color);
    border: none;
    padding: var(--spacing-md);
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    color: var(--text-primary);
    transition: background 0.2s;
}

.faq-question:hover {
    background: #eeeeee;
}

.faq-question[aria-expanded="true"] {
    background: var(--primary-color);
    color: white;
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: 300;
    transition: transform 0.2s;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: var(--spacing-md);
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    animation: fadeIn 0.3s;
}

.faq-answer[hidden] {
    display: none;
}

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

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm) 0;
    z-index: 100;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: all 0.2s;
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.nav-item:hover {
    color: var(--primary-color);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-elevated);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.modal form {
    padding: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

.form-actions button {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.form-actions button[type="submit"] {
    background: var(--primary-color);
    color: white;
}

.form-actions button[type="submit"]:hover {
    background: #1976D2;
}

.form-actions button[type="button"] {
    background: var(--background-color);
    color: var(--text-secondary);
}

.form-actions button[type="button"]:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: var(--surface-color);
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .app-main {
        padding: var(--spacing-sm);
    }
    
    .dashboard-cards {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .health-summary {
        grid-template-columns: 1fr;
    }
    
    .metric-values {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        margin: var(--spacing-sm);
        max-height: calc(100vh - 32px);
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .app-header h1 {
        font-size: 1rem;
    }
    
    .nav-item span {
        font-size: 0.6rem;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
    
    .card {
        flex-direction: column;
        text-align: center;
    }
    
    .card-icon {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }
    
    .item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .item-actions {
        align-self: flex-end;
    }
    
    .metric-values {
        grid-template-columns: 1fr;
    }
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-badge.active {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.status-badge.upcoming {
    background: rgba(255, 193, 7, 0.1);
    color: #F57C00;
}

.status-badge.overdue {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
}

.medication-times {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.medication-time {
    background: var(--background-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.notification {
    position: fixed;
    top: 80px;
    right: var(--spacing-md);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-elevated);
    z-index: 1001;
    max-width: 300px;
    transform: translateX(320px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.warning {
    border-left: 4px solid var(--warning-color);
}

.notification.error {
    border-left: 4px solid var(--danger-color);
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.notification-title {
    font-weight: 600;
    color: var(--text-primary);
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-content {
    color: var(--text-secondary);
    font-size: 0.9rem;
}