/* MediTrack - Healthcare PWA Styles */
/* Elderly-friendly: Large buttons, high contrast, blue theme */

:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;

    --success: #16a34a;
    --success-light: #22c55e;
    --warning: #d97706;
    --warning-light: #f59e0b;
    --danger: #dc2626;
    --danger-light: #ef4444;

    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    --header-height: 60px;
    --nav-height: 70px;

    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Screen Management */
.screen {
    display: none !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.screen.active {
    display: flex !important;
    flex-direction: column;
}

/* ============================================================
   Loading Screen
   ============================================================ */
#loading-screen {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    justify-content: center;
    align-items: center;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

.loading-content h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.loading-content p {
    opacity: 0.9;
    font-size: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    margin: var(--spacing-lg) auto 0;
    animation: spin 1s linear infinite;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ============================================================
   Auth Screen
   ============================================================ */
#auth-screen {
    background: var(--bg-primary);
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

.auth-container {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-tabs {
    display: flex;
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 4px;
    margin-bottom: var(--spacing-lg);
    gap: 4px;
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.auth-tab.active {
    background: var(--bg-card);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.auth-info {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-lg);
}

/* ============================================================
   Form Elements
   ============================================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="time"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-card);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-row .form-group {
    flex: 1;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 48px;
}

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

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

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

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

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    min-height: 56px;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
    min-height: 40px;
}

.btn-full {
    width: 100%;
}

.icon-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: var(--radius);
    font-size: 1.25rem;
    cursor: pointer;
    transition: background 0.2s;
}

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

/* ============================================================
   App Header
   ============================================================ */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: calc(var(--header-height) + var(--safe-area-top));
    padding-top: var(--safe-area-top);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    z-index: 100;
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.app-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.family-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background 0.2s;
}

.family-selector:hover {
    background: var(--border-color);
}

.family-avatar {
    font-size: 1.25rem;
}

.family-name {
    font-weight: 500;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-arrow {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================================
   Main Content
   ============================================================ */
.app-main {
    flex: 1;
    margin-top: calc(var(--header-height) + var(--safe-area-top));
    margin-bottom: calc(var(--nav-height) + var(--safe-area-bottom));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-content {
    display: none;
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
    flex-direction: column;
    min-height: 100%;
}

.tab-content.active {
    display: flex;
}

/* ============================================================
   Stats Card
   ============================================================ */
.stats-card {
    display: flex;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    color: white;
    box-shadow: var(--shadow);
}

.stat-item {
    flex: 1;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    opacity: 0.9;
}

/* ============================================================
   Section Headers
   ============================================================ */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

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

/* ============================================================
   Schedule List
   ============================================================ */
.schedule-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.schedule-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-light);
}

.schedule-item.taken {
    opacity: 0.7;
    border-left-color: var(--success);
}

.schedule-item.skipped {
    opacity: 0.6;
    border-left-color: var(--warning);
}

.schedule-item.missed {
    opacity: 0.6;
    border-left-color: var(--danger);
}

.schedule-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.schedule-info {
    flex: 1;
    min-width: 0;
}

.schedule-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 2px;
}

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

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

.schedule-btn {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.schedule-btn.take-btn {
    background: var(--success);
    color: white;
}

.schedule-btn.skip-btn {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.schedule-btn:hover {
    transform: scale(1.05);
}

.schedule-btn:active {
    transform: scale(0.95);
}

/* ============================================================
   Empty State
   ============================================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

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

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

/* ============================================================
   Medications Grid
   ============================================================ */
.medications-grid {
    display: grid;
    gap: var(--spacing-md);
}

.medication-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.2s;
    border-left: 4px solid var(--primary-light);
}

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

.medication-card.needs-refill {
    border-left-color: var(--warning);
}

.med-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.med-info {
    flex: 1;
    min-width: 0;
}

.med-name {
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 2px;
}

.med-details {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.med-stock {
    text-align: right;
    font-size: 0.85rem;
}

.med-stock.low {
    color: var(--warning);
    font-weight: 600;
}

/* ============================================================
   Alerts Section
   ============================================================ */
.alerts-section {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: var(--radius);
    padding: var(--spacing-md);
}

.alerts-section h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: #92400e;
}

.alerts-section.hidden {
    display: none;
}

/* ============================================================
   Mood Quick Log
   ============================================================ */
.mood-quick-log {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.mood-quick-log p {
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.mood-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.mood-btn {
    width: 56px;
    height: 56px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    background: var(--bg-card);
    font-size: 1.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.mood-btn:hover {
    border-color: var(--primary-light);
    transform: scale(1.1);
}

.mood-btn.selected {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

/* ============================================================
   Symptoms Timeline
   ============================================================ */
.symptoms-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.symptom-entry {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

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

.symptom-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.symptom-mood {
    font-size: 1.5rem;
}

.symptom-metrics {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.metric {
    font-size: 0.85rem;
}

.metric-label {
    color: var(--text-secondary);
}

.symptom-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.symptom-tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: var(--bg-primary);
    border-radius: 100px;
    color: var(--text-secondary);
}

.symptom-tag.side-effect {
    background: #fee2e2;
    color: #991b1b;
}

/* ============================================================
   Chart Card
   ============================================================ */
.chart-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.chart-card h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.chart-container {
    height: 200px;
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
}

.chart-bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.bar-fill {
    width: 100%;
    max-width: 40px;
    background: var(--primary-light);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: height 0.5s ease-out;
    min-height: 4px;
}

.bar-fill.perfect {
    background: var(--success);
}

.bar-fill.good {
    background: var(--success-light);
}

.bar-fill.warning {
    background: var(--warning);
}

.bar-fill.danger {
    background: var(--danger);
}

.bar-label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.bar-value {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================================
   Calendar
   ============================================================ */
.calendar-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

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

#calendar-month {
    font-weight: 600;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-day-header {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--spacing-sm);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.calendar-day:hover {
    background: var(--bg-primary);
}

.calendar-day.empty {
    cursor: default;
}

.calendar-day.today {
    font-weight: 700;
    border: 2px solid var(--primary);
}

.calendar-day .rate-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-top: 2px;
}

.calendar-day .rate-indicator.perfect {
    background: var(--success);
}

.calendar-day .rate-indicator.good {
    background: var(--success-light);
}

.calendar-day .rate-indicator.partial {
    background: var(--warning);
}

.calendar-day .rate-indicator.bad {
    background: var(--danger);
}

/* ============================================================
   Bottom Navigation
   ============================================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--nav-height) + var(--safe-area-bottom));
    padding-bottom: var(--safe-area-bottom);
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    display: flex;
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: color 0.2s;
    padding: var(--spacing-sm);
}

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

.nav-icon {
    font-size: 1.5rem;
}

.nav-label {
    font-weight: 500;
}

/* ============================================================
   Modals
   ============================================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: flex-end;
    z-index: 1000;
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

.modal-content.modal-large {
    max-height: 90vh;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-card);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-header.warning {
    background: #fef3c7;
    color: #92400e;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-primary);
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: var(--spacing-lg);
}

/* ============================================================
   Family List
   ============================================================ */
.family-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.family-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s;
}

.family-item:hover {
    background: var(--border-color);
}

.family-item.selected {
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid var(--primary-light);
}

.family-item-avatar {
    font-size: 2rem;
}

.family-item-info {
    flex: 1;
}

.family-item-name {
    font-weight: 600;
}

.family-item-relation {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================================
   Emoji/Icon Pickers
   ============================================================ */
.emoji-picker,
.icon-picker {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.emoji-option,
.icon-option {
    width: 44px;
    height: 44px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-card);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.emoji-option:hover,
.icon-option:hover {
    border-color: var(--primary-light);
}

.emoji-option.selected,
.icon-option.selected {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

.color-icon-row {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.color-icon-row input[type="color"] {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

/* ============================================================
   Time Inputs
   ============================================================ */
.times-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.time-input-row {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.time-input-row input {
    flex: 1;
}

.btn-remove-time {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--danger-light);
    color: white;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
}

/* ============================================================
   Mood Selector (Symptom Form)
   ============================================================ */
.mood-selector {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-xs);
}

.mood-select-btn {
    flex: 1;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-card);
    font-size: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.mood-select-btn small {
    display: block;
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.mood-select-btn:hover {
    border-color: var(--primary-light);
}

.mood-select-btn.selected {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

/* ============================================================
   Range Inputs
   ============================================================ */
input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: var(--shadow);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================================
   Checkbox Group
   ============================================================ */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.checkbox-group label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border-radius: 100px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.checkbox-group label:has(input:checked) {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary);
}

.checkbox-group input {
    display: none;
}

/* ============================================================
   Settings
   ============================================================ */
.settings-section {
    margin-bottom: var(--spacing-lg);
}

.settings-section h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-sm);
}

.settings-section.danger-zone {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
}

.settings-section.danger-zone button {
    margin-bottom: var(--spacing-sm);
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 50px;
    height: 28px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--border-color);
    border-radius: 28px;
    cursor: pointer;
    transition: background 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: var(--shadow-sm);
}

.toggle input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

/* ============================================================
   Interaction Warning
   ============================================================ */
.interaction-warning {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: var(--radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.interaction-warning.severe {
    background: #fee2e2;
    border-color: #ef4444;
}

.interaction-warning h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.interaction-disclaimer {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    margin: var(--spacing-md) 0;
}

/* ============================================================
   Toast
   ============================================================ */
#toast-container {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease-out;
    max-width: 90vw;
    text-align: center;
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--danger);
}

.toast.warning {
    background: var(--warning);
}

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

/* ============================================================
   Responsive
   ============================================================ */
@media (max-height: 667px) {
    .stats-card {
        padding: var(--spacing-md);
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .schedule-item {
        padding: var(--spacing-sm);
    }
}

@media (max-height: 568px) {
    :root {
        --header-height: 50px;
        --nav-height: 60px;
    }

    .stats-card {
        padding: var(--spacing-sm);
    }
}

@media (min-width: 768px) {
    .modal-content {
        border-radius: var(--radius-xl);
        max-width: 500px;
        margin-bottom: var(--spacing-lg);
    }

    .modal {
        align-items: center;
    }

    .medications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .app-main {
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* ============================================================
   Utilities
   ============================================================ */
.hidden {
    display: none !important;
}

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

.mt-md {
    margin-top: var(--spacing-md);
}

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