/* Modern Healthcare UI Design Variables */
:root {
    /* Fonts */
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Light Mode Tokens */
    --bg-app: #f4f6fa;
    --bg-card: #ffffff;
    --text-primary: #1c1c1e;
    --text-secondary: #6e6e73;
    --border-color: #e5e5ea;
    
    /* Category Colors */
    --color-primary: #0071e3; /* Apple Blue */
    --color-primary-light: rgba(0, 113, 227, 0.1);
    --color-heart: #ff2d55; /* Apple Red/Rose */
    --color-heart-light: rgba(255, 45, 85, 0.1);
    --color-sugar: #ff9500; /* Apple Orange */
    --color-sugar-light: rgba(255, 149, 0, 0.1);
    --color-weight: #5856d6; /* Purple */
    --color-weight-light: rgba(88, 86, 214, 0.1);
    
    /* General States */
    --color-success: #34c759;
    --color-success-light: rgba(52, 199, 89, 0.1);
    --color-warning: #ffcc00;
    --color-warning-light: rgba(255, 204, 0, 0.1);
    --color-danger: #ff3b30;
    --color-danger-light: rgba(255, 59, 48, 0.1);
    
    /* Shadows & Border Radius */
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.04);
    --shadow-medium: 0 12px 40px rgba(0, 0, 0, 0.08);
    --shadow-fab: 0 6px 20px rgba(0, 113, 227, 0.3);
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    
    /* Layout Sizes */
    --max-app-width: 480px;
    --bottom-nav-height: 72px;
    --header-height: 60px;
    --sidebar-width-desktop: 240px;
    --sidebar-width-tablet: 80px;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    color-scheme: dark;
    --bg-app: #0a0a0c;
    --bg-card: #1c1c1e;
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --border-color: #2c2c2e;
    
    --color-primary: #0a84ff;
    --color-primary-light: rgba(10, 132, 255, 0.15);
    --color-heart: #ff375f;
    --color-heart-light: rgba(255, 55, 95, 0.15);
    --color-sugar: #ff9f0a;
    --color-sugar-light: rgba(255, 159, 10, 0.15);
    --color-weight: #5e5ce6;
    --color-weight-light: rgba(94, 92, 230, 0.15);
    
    --color-success: #30d158;
    --color-success-light: rgba(48, 209, 88, 0.15);
    --color-warning: #ffd60a;
    --color-warning-light: rgba(255, 214, 10, 0.15);
    --color-danger: #ff453a;
    --color-danger-light: rgba(255, 69, 58, 0.15);
    
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Invert Webkit calendar indicator icon in dark mode for visibility */
[data-theme="dark"] input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

/* Global Reset & Base Styling */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-primary);
    background-color: #e2e8f0; /* Desktop outer background */
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* App Wrapper for Desktop Mockup and Mobile Stretch */
#app-container {
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
    margin: 0 auto;
    background-color: var(--bg-app);
    position: relative;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    padding-bottom: calc(var(--bottom-nav-height) + 20px);
    padding-top: var(--header-height);
    transition: background-color 0.3s ease;
}

@media (min-width: 768px) {
    #app-container {
        max-width: 720px;
        box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
    }
}

@media (min-width: 992px) {
    #app-container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    #app-container {
        max-width: 1140px;
    }
}

/* Header bar style */
header.app-header {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

@media (min-width: 768px) {
    header.app-header { max-width: 720px; }
}
@media (min-width: 992px) {
    header.app-header { max-width: 960px; }
}
@media (min-width: 1200px) {
    header.app-header { max-width: 1140px; }
}

[data-theme="dark"] header.app-header {
    background-color: rgba(28, 28, 30, 0.8);
}

.header-title {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-btn {
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.header-btn:hover, .header-btn:active {
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .header-btn:hover, [data-theme="dark"] .header-btn:active {
    background-color: rgba(255, 255, 255, 0.08);
}

/* App Bottom Navigation Bar */
nav.app-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 100%;
    height: var(--bottom-nav-height);
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

@media (min-width: 768px) {
    nav.app-nav { max-width: 720px; }
}
@media (min-width: 992px) {
    nav.app-nav { max-width: 960px; }
}
@media (min-width: 1200px) {
    nav.app-nav { max-width: 1140px; }
}

[data-theme="dark"] nav.app-nav {
    background-color: rgba(28, 28, 30, 0.85);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    flex-grow: 1;
    height: 100%;
    gap: 4px;
    transition: color 0.2s ease, transform 0.1s ease;
}

.nav-item i {
    font-size: 1.35rem;
    transition: transform 0.2s ease;
}

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

.nav-item:active i {
    transform: scale(0.9);
}

/* Floating Action Button (FAB) */
.fab-btn {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + 16px);
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #0056b3);
    color: #ffffff;
    border: none;
    box-shadow: var(--shadow-fab);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    z-index: 999;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@media (min-width: 768px) {
    .fab-btn { right: calc(50% - (720px/2) + 20px); }
}
@media (min-width: 992px) {
    .fab-btn { right: calc(50% - (960px/2) + 20px); }
}
@media (min-width: 1200px) {
    .fab-btn { right: calc(50% - (1140px/2) + 20px); }
}

.fab-btn:active {
    transform: scale(0.9) rotate(90deg);
}

/* Premium Card Components */
.health-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
    margin-bottom: 16px;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.3s;
}

.health-card:active {
    transform: scale(0.98);
}

.health-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.health-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.health-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.health-card-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.health-card-unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.health-card-footer {
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Categorized Cards Styles */
.card-meal .health-card-icon { background-color: var(--color-primary-light); color: var(--color-primary); }
.card-bp .health-card-icon { background-color: var(--color-heart-light); color: var(--color-heart); }
.card-sugar .health-card-icon { background-color: var(--color-sugar-light); color: var(--color-sugar); }
.card-weight .health-card-icon { background-color: var(--color-weight-light); color: var(--color-weight); }

/* Quick Action Sheets / Bottom Sheets */
.bottom-sheet {
    position: fixed;
    bottom: -100%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 100%;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.15);
    z-index: 1050;
    padding: 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
    transition: bottom 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (min-width: 768px) {
    .bottom-sheet { max-width: 720px; }
}
@media (min-width: 992px) {
    .bottom-sheet { max-width: 960px; }
}
@media (min-width: 1200px) {
    .bottom-sheet { max-width: 1140px; }
}

.bottom-sheet.show {
    bottom: 0;
}

.bottom-sheet-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.bottom-sheet-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.bottom-sheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.bottom-sheet-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.bottom-sheet-drag-handle {
    width: 40px;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
    margin: -12px auto 16px auto;
}

/* Quick Add Button Layout */
.quick-add-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}
@media (min-width: 768px) {
    .quick-add-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.quick-add-btn {
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
}

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

.quick-add-btn i {
    font-size: 1.5rem;
}

.quick-add-btn.qa-meal i { color: var(--color-primary); }
.quick-add-btn.qa-bp i { color: var(--color-heart); }
.quick-add-btn.qa-sugar i { color: var(--color-sugar); }
.quick-add-btn.qa-weight i { color: var(--color-weight); }

/* Premium Input Fields and Buttons */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    display: block;
}

.form-control-health {
    width: 100%;
    background-color: var(--bg-app);
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: var(--font-primary);
    color: var(--text-primary);
    transition: border-color 0.2s, background-color 0.2s;
}

.form-control-health:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--bg-card);
}

.btn-health-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    font-weight: 600;
    width: 100%;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.2);
    transition: transform 0.2s, opacity 0.2s;
}

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

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

.btn-health-secondary {
    background-color: var(--border-color);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    font-weight: 600;
    width: 100%;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.2s, opacity 0.2s;
}

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

/* Timeline/Log Styles */
.timeline-container {
    position: relative;
    padding-left: 24px;
    margin-top: 10px;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 24px;
}

.timeline-dot {
    position: absolute;
    left: -24px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 3px solid var(--bg-app);
    z-index: 1;
}

.tdot-meal { background-color: var(--color-primary); }
.tdot-bp { background-color: var(--color-heart); }
.tdot-sugar { background-color: var(--color-sugar); }
.tdot-weight { background-color: var(--color-weight); }

.timeline-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.timeline-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
}

.timeline-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 6px;
}

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

.timeline-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 8px;
}

.timeline-action-btn {
    background: none;
    border: none;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.timeline-action-btn.btn-edit:hover { color: var(--color-primary); }
.timeline-action-btn.btn-delete:hover { color: var(--color-danger); }

/* Progress rings / visual health items */
.progress-ring-container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 80px;
    height: 80px;
}

.progress-ring-value {
    position: absolute;
    font-size: 0.95rem;
    font-weight: 700;
}

/* Badge values */
.badge-health {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-normal { background-color: var(--color-success-light); color: var(--color-success); }
.badge-elevated { background-color: var(--color-warning-light); color: var(--color-warning); }
.badge-high { background-color: var(--color-danger-light); color: var(--color-danger); }
.badge-critical { background-color: #ff3b30; color: #ffffff; animation: pulse-critical 2s infinite; }
.badge-low { background-color: var(--color-primary-light); color: var(--color-primary); }

@keyframes pulse-critical {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 59, 48, 0.4); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(255, 59, 48, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 59, 48, 0); }
}

/* Toast System styling */
.health-toast-container {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    width: calc(100% - 32px);
    max-width: 380px;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.health-toast {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-sm);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.02);
    padding: 10px 14px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto;
    opacity: 0;
    transform: translateY(-16px) scale(0.96);
    transition: opacity 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] .health-toast {
    background: rgba(28, 28, 30, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.08);
}

.health-toast.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.toast-icon-badge {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.toast-message {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.35;
}

/* Toast success */
.health-toast.toast-success {
    border-color: rgba(52, 199, 89, 0.2);
}
.health-toast.toast-success .toast-icon-badge {
    background-color: var(--color-success-light);
    color: var(--color-success);
}
[data-theme="dark"] .health-toast.toast-success {
    border-color: rgba(48, 209, 88, 0.2);
}

/* Toast danger */
.health-toast.toast-danger {
    border-color: rgba(255, 59, 48, 0.2);
}
.health-toast.toast-danger .toast-icon-badge {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
}
[data-theme="dark"] .health-toast.toast-danger {
    border-color: rgba(255, 69, 58, 0.2);
}

/* Toast warning */
.health-toast.toast-warning {
    border-color: rgba(255, 149, 0, 0.2);
}
.health-toast.toast-warning .toast-icon-badge {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}
[data-theme="dark"] .health-toast.toast-warning {
    border-color: rgba(255, 214, 10, 0.2);
}

/* Toast info */
.health-toast.toast-info {
    border-color: rgba(0, 113, 227, 0.2);
}
.health-toast.toast-info .toast-icon-badge {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}
[data-theme="dark"] .health-toast.toast-info {
    border-color: rgba(10, 132, 255, 0.2);
}

/* Toggle Reminders Switch */
.switch-health {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.switch-health input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider-health {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .3s;
    border-radius: 34px;
}

.slider-health:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

input:checked + .slider-health {
    background-color: var(--color-success);
}

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

/* Page Section spacing */
.app-section {
    padding: 20px;
}

.app-section-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Onboarding Wizard Styles */
.wizard-step {
    display: none;
}

.wizard-step.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

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

.wizard-progress {
    display: flex;
    gap: 6px;
    margin-bottom: 24px;
}

.wizard-progress-bar {
    height: 4px;
    flex-grow: 1;
    background-color: var(--border-color);
    border-radius: 2px;
    transition: background-color 0.3s;
}

.wizard-progress-bar.active {
    background-color: var(--color-primary);
}

/* Custom Day selector (for reminders) */
.day-selector {
    display: flex;
    justify-content: space-between;
    gap: 4px;
    margin-top: 8px;
}

.day-checkbox {
    display: none;
}

.day-label {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.day-checkbox:checked + .day-label {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

/* Insights style list */
.insight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.insight-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.insight-icon {
    font-size: 1.25rem;
    margin-top: 2px;
}

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

.insight-text strong {
    color: var(--text-primary);
    display: block;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

/* Responsive Grid & Utility Systems */
.vitals-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}
@media (min-width: 768px) {
    .vitals-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 992px) {
    .vitals-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
@media (min-width: 768px) {
    .charts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1200px) {
    .charts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.auth-form-card {
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
}

/* Sidebar Brand (Hidden on mobile) */
.sidebar-brand {
    display: none;
}

/* Day separators & badges in Daily Timeline */
.timeline-day-group {
    border-top: 1.5px solid var(--border-color);
    padding-top: 20px;
    margin-top: 32px;
}
.timeline-day-group:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

/* Badge day header styling */
.timeline-day-title {
    display: inline-flex !important;
    align-items: center;
    gap: 8px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    box-shadow: var(--shadow-soft);
    margin-top: 8px;
    margin-bottom: 20px !important;
}

/* Double-column Form layout */
.form-grid-2col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}
@media (min-width: 768px) {
    .form-grid-2col {
        grid-template-columns: repeat(2, 1fr);
    }
    .form-grid-full {
        grid-column: span 2;
    }
}

/* Insights/Averages dashboard Grid */
.insights-averages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
@media (min-width: 992px) {
    .insights-averages-grid {
        grid-template-columns: 1fr 2fr;
    }
}

/* Reminders multi-column Grid */
.reminders-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}
@media (min-width: 768px) {
    .reminders-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1200px) {
    .reminders-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Daily View splits (Timeline Page layout) */
.log-page-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.log-control-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    width: 100%;
    gap: 12px;
}
.log-control-header form {
    display: inline-flex;
    align-items: center;
    margin-bottom: 0;
}
@media (min-width: 768px) {
    .log-page-layout {
        flex-direction: row;
        align-items: flex-start;
    }
    .log-control-panel {
        width: 280px;
        flex-shrink: 0;
        position: sticky;
        top: calc(var(--header-height) + 20px);
        background-color: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 24px 20px;
        box-shadow: var(--shadow-soft);
    }
    .log-control-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 20px;
    }
    .log-control-header form {
        width: 100%;
        display: flex;
    }
    .log-control-header form input {
        width: 100% !important;
    }
    .log-control-panel .filter-pills-container {
        display: flex;
        flex-direction: column;
        gap: 10px !important;
        width: 100%;
    }
    .log-control-panel .filter-pill {
        width: 100%;
        justify-content: flex-start;
        padding: 10px 16px;
        margin-bottom: 0 !important;
    }
    .log-timeline-area {
        flex-grow: 1;
    }
}

/* Responsive sidebars & modal overrides for Tablet and Desktop viewports */
@media (min-width: 768px) {
    /* Main container settings */
    #app-container.has-sidebar {
        padding-left: var(--sidebar-width-tablet);
        padding-top: var(--header-height);
        padding-bottom: 24px;
        max-width: 100% !important;
        border-left: none;
        border-right: none;
        box-shadow: none;
    }

    #app-container.has-sidebar .app-section {
        max-width: 1200px;
        margin: 0 auto;
        width: 100%;
        padding: 24px;
    }

    /* Fixed top header sits right of sidebar */
    #app-container.has-sidebar header.app-header {
        left: var(--sidebar-width-tablet);
        transform: none;
        width: calc(100% - var(--sidebar-width-tablet));
        max-width: none;
        border-left: 1px solid var(--border-color);
    }
    
    /* Top header hide title on desktop */
    #app-container.has-sidebar header.app-header .header-title {
        display: none;
    }

    /* Sidebar Navigation container */
    #app-container.has-sidebar nav.app-nav {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: var(--sidebar-width-tablet);
        height: 100vh;
        max-width: var(--sidebar-width-tablet);
        transform: none;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 24px 8px;
        border-right: 1px solid var(--border-color);
        border-top: none;
        background-color: var(--bg-card);
        z-index: 1020;
    }

    /* Brand Logo inside sidebar */
    #app-container.has-sidebar .sidebar-brand {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        height: 48px;
        margin-bottom: 30px;
        font-size: 1.35rem;
        color: var(--color-heart);
    }
    #app-container.has-sidebar .sidebar-brand span {
        display: none; /* hide label on narrow menu */
    }

    /* Navigation links inside sidebar */
    #app-container.has-sidebar .nav-item {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        width: 100%;
        height: 56px;
        border-radius: var(--radius-sm);
        font-size: 0.65rem;
        margin-bottom: 12px;
        flex-grow: 0;
        padding: 4px;
    }

    #app-container.has-sidebar .nav-item.active {
        background-color: var(--color-primary-light);
    }
    
    /* FAB Button position */
    #app-container.has-sidebar ~ .fab-btn,
    .fab-btn {
        right: 40px !important;
        bottom: 40px !important;
    }

    /* Bottom Sheets transformed to centered modal popups */
    .bottom-sheet {
        position: fixed;
        top: 50%;
        left: 50%;
        bottom: auto !important;
        transform: translate(-50%, -40%) scale(0.95);
        width: 550px;
        max-width: 90%;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-medium);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), visibility 0.3s ease;
        padding: 32px 28px;
    }
    
    .bottom-sheet.show {
        bottom: auto !important;
        top: 50%;
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
        visibility: visible;
    }
    
    .bottom-sheet-drag-handle {
        display: none;
    }
}

@media (min-width: 992px) {
    /* Main container settings */
    #app-container.has-sidebar {
        padding-left: var(--sidebar-width-desktop);
    }

    /* Fixed top header sits right of sidebar */
    #app-container.has-sidebar header.app-header {
        left: var(--sidebar-width-desktop);
        width: calc(100% - var(--sidebar-width-desktop));
    }

    /* Sidebar Navigation container */
    #app-container.has-sidebar nav.app-nav {
        width: var(--sidebar-width-desktop);
        max-width: var(--sidebar-width-desktop);
        padding: 24px 16px;
        align-items: flex-start;
    }

    /* Brand Logo inside sidebar */
    #app-container.has-sidebar .sidebar-brand {
        justify-content: flex-start;
        gap: 12px;
        padding: 0 16px;
        font-weight: 800;
        font-size: 1.2rem;
        color: var(--text-primary);
        text-decoration: none;
    }
    #app-container.has-sidebar .sidebar-brand i {
        color: var(--color-heart);
    }
    #app-container.has-sidebar .sidebar-brand span {
        display: inline; /* show label on wide menu */
    }

    /* Navigation links inside sidebar */
    #app-container.has-sidebar .nav-item {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 14px;
        width: 100%;
        height: 48px;
        padding: 0 16px;
        font-size: 0.9rem;
        margin-bottom: 8px;
    }
}

/* ==========================================
   Modern Authentication Split Pane Layouts
   ========================================== */
.auth-page-split {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
    background-color: var(--bg-app);
}

.auth-visual-pane {
    display: none; /* hidden on mobile/tablet */
}

.auth-form-pane {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    background: radial-gradient(circle at 50% 50%, rgba(10, 132, 255, 0.06) 0%, rgba(255, 55, 95, 0.04) 50%, var(--bg-app) 100%);
}

.auth-mobile-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-bottom: 24px;
    width: 100%;
}

.auth-mobile-header i {
    font-size: 2.5rem;
    color: var(--color-heart);
    margin-bottom: 8px;
    animation: pulse-critical 2s infinite;
    filter: drop-shadow(0 4px 10px var(--color-heart-light));
}

.auth-mobile-header h1 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 2px;
    letter-spacing: -0.5px;
}

.auth-mobile-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    font-weight: 500;
}

/* Glassmorphic Form Card */
.auth-glass-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    padding: 24px 20px;
    width: 100%;
    max-width: 460px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .auth-glass-card {
    background: rgba(28, 28, 30, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

/* Modernized Input Wrapper with Left Icons & Right Toggles */
.auth-input-group {
    position: relative;
    margin-bottom: 20px;
}

.auth-input-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.auth-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.auth-input-wrapper i.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.1rem;
    pointer-events: none;
    transition: color 0.2s;
    z-index: 5;
}

.auth-input-wrapper .form-control-health {
    padding-left: 48px; /* offset for icon */
    padding-right: 48px; /* offset for password toggle */
}

.auth-input-wrapper .form-control-health:focus ~ i.input-icon {
    color: var(--color-primary);
}

/* Password eye button styling */
.auth-input-wrapper .password-toggle-btn {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    z-index: 5;
    transition: color 0.2s;
}

.auth-input-wrapper .password-toggle-btn:hover {
    color: var(--color-primary);
}

/* CSS Mock Dashboard preview in Visual Side Pane */
.mock-dashboard-preview {
    width: 100%;
    max-width: 440px;
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 1;
}

.mock-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: transform 0.3s;
}

.mock-card:hover {
    transform: translateY(-2px);
}

.mock-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 600;
}

.mock-card-value {
    font-size: 1.55rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.5px;
}

.mock-card-footer {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.45);
    display: flex;
    align-items: center;
    gap: 6px;
}

.mock-card.card-bp-mock .mock-card-header i { color: var(--color-heart); }
.mock-card.card-sugar-mock .mock-card-header i { color: var(--color-sugar); }
.mock-card.card-weight-mock .mock-card-header i { color: var(--color-weight); }

/* Desktop Split Layout overrides */
@media (min-width: 992px) {
    .auth-page-split {
        flex-direction: row;
    }
    .auth-visual-pane {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 45%;
        background: linear-gradient(135deg, #09090b 0%, #1e1b4b 100%);
        padding: 60px;
        position: relative;
        overflow: hidden;
        color: #ffffff;
        border-right: 1px solid var(--border-color);
    }
    .auth-form-pane {
        width: 55%;
        padding: 60px;
    }
    .auth-glass-card {
        padding: 40px;
    }

    /* Ambient background glows for visual pane */
    .auth-visual-pane::before {
        content: '';
        position: absolute;
        top: -10%;
        left: -10%;
        width: 60%;
        height: 60%;
        background: radial-gradient(circle, rgba(10, 132, 255, 0.15) 0%, rgba(10, 132, 255, 0) 70%);
        z-index: 0;
        pointer-events: none;
    }
    .auth-visual-pane::after {
        content: '';
        position: absolute;
        bottom: -10%;
        right: -10%;
        width: 60%;
        height: 60%;
        background: radial-gradient(circle, rgba(255, 55, 95, 0.1) 0%, rgba(255, 55, 95, 0) 70%);
        z-index: 0;
        pointer-events: none;
    }
    .auth-mobile-header {
        display: none;
    }
}