/* ===== CSS Variables & Design Tokens ===== */
:root {
    /* Color Palette - HSL based for smooth color blending */
    --h-primary: 211;
    --s-primary: 100%;
    --l-primary: 50%;
    
    --primary: hsl(var(--h-primary), var(--s-primary), var(--l-primary)); /* Apple Blue */
    --primary-hover: hsl(var(--h-primary), var(--s-primary), 42%);
    --primary-light: hsla(var(--h-primary), var(--s-primary), var(--l-primary), 0.1);
    
    /* Backgrounds & Surfaces (Light Theme) */
    --background: #f4f6fa;
    --surface: rgba(255, 255, 255, 0.65);
    --surface-hover: rgba(255, 255, 255, 0.85);
    --surface-active: rgba(255, 255, 255, 0.95);
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    
    /* Text Colors */
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #a1a1a6;
    
    /* FODMAP Traffic Colors */
    --green: #34c759;
    --green-light: rgba(52, 199, 89, 0.12);
    --yellow: #ff9500;
    --yellow-light: rgba(255, 149, 0, 0.12);
    --red: #ff3b30;
    --red-light: rgba(255, 59, 48, 0.12);
    --grey-light: rgba(142, 142, 147, 0.12);
    
    /* Accessibility Scale base */
    --text-size-base: 16px;
    --text-size-scale: 1;
    
    /* Spacings */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 0.75rem;  /* 12px */
    --spacing-md: 1rem;    /* 16px */
    --spacing-lg: 1.5rem;   /* 24px */
    --spacing-xl: 2rem;    /* 32px */
    
    /* Corner Radii */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
    
    /* Transitions */
    --transition-spring: 450ms cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-smooth: 300ms cubic-bezier(0.25, 1, 0.5, 1);
    --transition-fast: 150ms cubic-bezier(0.25, 1, 0.5, 1);
}

/* ===== Dark Mode Theme Override ===== */
[data-theme="dark"] {
    --background: #09090b;
    --surface: rgba(20, 20, 25, 0.6);
    --surface-hover: rgba(28, 28, 35, 0.75);
    --surface-active: rgba(35, 35, 45, 0.85);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f5f5f7;
    --text-secondary: #98989d;
    --text-tertiary: #6c6c72;
    
    --green-light: rgba(52, 199, 89, 0.18);
    --yellow-light: rgba(255, 149, 0, 0.18);
    --red-light: rgba(255, 59, 48, 0.18);
    --grey-light: rgba(142, 142, 147, 0.18);
}

/* ===== High Contrast Mode Override ===== */
[data-a11y-mode="high-contrast"] {
    --primary: #004cff;
    --background: #ffffff;
    --surface: #ffffff;
    --surface-hover: #f0f4ff;
    --surface-active: #e0ecff;
    --border: #000000;
    --border-hover: #000000;
    
    --text-primary: #000000;
    --text-secondary: #1a1a1a;
    --text-tertiary: #333333;
    
    --green: #006600;
    --green-light: #e6f9e6;
    --yellow: #995c00;
    --yellow-light: #fff5e6;
    --red: #cc0000;
    --red-light: #ffe6e6;
    
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
}

[data-theme="dark"][data-a11y-mode="high-contrast"] {
    --background: #000000;
    --surface: #121212;
    --surface-hover: #222222;
    --surface-active: #333333;
    --border: #ffffff;
    --border-hover: #ffffff;
    
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-tertiary: #cccccc;
    
    --green: #00ff00;
    --green-light: #003300;
    --yellow: #ffaa00;
    --yellow-light: #332200;
    --red: #ff3333;
    --red-light: #330000;
}

/* ===== Font Size Scaling ===== */
[data-text-size="small"] { --text-size-base: 14px; --text-size-scale: 0.9; }
[data-text-size="medium"] { --text-size-base: 16px; --text-size-scale: 1; }
[data-text-size="large"] { --text-size-base: 18px; --text-size-scale: 1.125; }
[data-text-size="extra-large"] { --text-size-base: 20px; --text-size-scale: 1.25; }

/* ===== Animations & Transitions Settings ===== */
[data-reduced-motion="true"] {
    --transition-spring: 0ms !important;
    --transition-smooth: 0ms !important;
    --transition-fast: 0ms !important;
}
[data-reduced-motion="true"] *, 
[data-reduced-motion="true"] *::before, 
[data-reduced-motion="true"] *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
}

/* ===== Base Document Setup ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: var(--text-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Outfit', 'Segoe UI', Roboto, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.45;
    min-height: 100vh;
    font-size: calc(1rem * var(--text-size-scale));
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

/* Accessibility Focus Ring */
button:focus-visible, 
input:focus-visible, 
textarea:focus-visible, 
select:focus-visible {
    outline: 2.5px solid var(--primary);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-to-content {
    position: absolute;
    top: -60px;
    left: 20px;
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    z-index: 99999;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: top var(--transition-fast);
}
.skip-to-content:focus {
    top: 0;
}

/* ===== Custom Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 99px;
}
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ===== Glass Card Architecture ===== */
.glass-card {
    background: var(--surface);
    backdrop-filter: blur(25px) saturate(190%);
    -webkit-backdrop-filter: blur(25px) saturate(190%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth), transform var(--transition-smooth);
}
.glass-card:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

/* ===== Responsive App Shell Wrapper ===== */
.app-shell {
    display: flex;
    flex-direction: row;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* ===== SIDEBAR NAVIGATION (Desktop/Tablets) ===== */
.sidebar-nav {
    width: 280px;
    height: calc(100vh - 30px);
    margin: 15px 0 15px 15px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    z-index: 10;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-xs);
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px var(--primary-light);
}

.brand-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary) 0%, #00c7be 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    text-align: left;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
    transform: translateX(4px);
}

[data-theme="dark"] .nav-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    background: var(--primary);
    color: white !important;
    transform: none;
    box-shadow: 0 4px 12px var(--primary-light);
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border-top: 1px solid var(--border);
    padding-top: var(--spacing-md);
}

.app-version {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-align: center;
}

/* ===== MAIN CONTENT WRAPPER ===== */
.main-content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    position: relative;
}

/* ===== App Headers ===== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 9;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(244, 246, 250, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-smooth);
}
[data-theme="dark"] .app-header {
    background: rgba(9, 9, 11, 0.8);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

/* ===== Main Scrollable Area ===== */
.main-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ===== TAB PANEL TOGGLING ===== */
.tab-panel {
    display: none;
    flex-direction: column;
}
.tab-panel.active {
    display: flex;
    animation: panelFadeIn 0.3s var(--transition-smooth) forwards;
}

@keyframes panelFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== PANEL 1: FOOD LIST & SEARCH ===== */
.search-filter-section {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.search-bar-row {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
}

.inline-search-container {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-secondary);
    pointer-events: none;
}

.inline-search-container input {
    width: 100%;
    padding: 0.8rem var(--spacing-xl) 0.8rem 2.8rem;
    border: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

[data-theme="dark"] .inline-search-container input {
    background: rgba(255, 255, 255, 0.03);
}

.inline-search-container input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--surface-active);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.clear-search {
    position: absolute;
    right: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
[data-theme="dark"] .clear-search {
    background: rgba(255, 255, 255, 0.08);
}
.clear-search:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

/* Category horizontal carousel */
.category-carousel-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-md);
    scrollbar-width: none; /* Firefox */
}
.category-carousel-wrapper::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.filter-chips {
    display: flex;
    gap: var(--spacing-xs);
    white-space: nowrap;
    padding-bottom: 2px;
}

.filter-chip {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

[data-theme="dark"] .filter-chip {
    background: rgba(255, 255, 255, 0.04);
}

.filter-chip:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary);
}

[data-theme="dark"] .filter-chip:hover {
    background: rgba(255, 255, 255, 0.08);
}

.filter-chip.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 10px var(--primary-light);
}

/* Filter toggle button */
.filter-toggle-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 122, 255, 0.08);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-toggle-btn:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.02);
}

/* ===== TABLE / FOOD LIST VIEW ===== */
.table-section {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

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

.table-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
}

.food-count {
    font-size: 0.85rem;
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.25rem 0.6rem;
    border-radius: 99px;
    font-weight: 600;
}

/* Scroll wrapper */
.food-list-container {
    width: 100%;
}

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

/* Food Item Card Redesign */
.food-item {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.food-item:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

/* Left colored accent indicator line */
.food-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: var(--level-color, var(--text-tertiary));
}

.food-item.level-green { --level-color: var(--green); }
.food-item.level-yellow { --level-color: var(--yellow); }
.food-item.level-red { --level-color: var(--red); }
.food-item.level-white { --level-color: var(--text-tertiary); }

.food-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + 4px);
    cursor: pointer;
    width: 100%;
}

.food-item-main {
    flex: 1;
    min-width: 0;
}

.food-item-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.food-item-category {
    margin-top: 0.15rem;
}

.category-badge {
    display: inline-block;
    font-size: 0.725rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.04);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
[data-theme="dark"] .category-badge {
    background: rgba(255, 255, 255, 0.06);
}

.food-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: 0.35rem;
}

.level-indicator, 
.tolerance-indicator {
    font-size: 0.725rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 99px;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.level-indicator::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

/* Indicator status stylings */
.level-indicator.green { background: var(--green-light); color: var(--green); }
.level-indicator.green::before { background: var(--green); }
.level-indicator.yellow { background: var(--yellow-light); color: var(--yellow); }
.level-indicator.yellow::before { background: var(--yellow); }
.level-indicator.red { background: var(--red-light); color: var(--red); }
.level-indicator.red::before { background: var(--red); }

.tolerance-indicator.tolerance-safe { background: var(--green-light); color: var(--green); }
.tolerance-indicator.tolerance-moderate { background: var(--yellow-light); color: var(--yellow); }
.tolerance-indicator.tolerance-problematic { background: var(--red-light); color: var(--red); }
.tolerance-indicator.tolerance-untested { background: var(--grey-light); color: var(--text-secondary); }

/* Item action buttons */
.food-item-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.expand-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.03);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.expand-toggle:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary);
}
.food-item.expanded .expand-toggle {
    transform: rotate(180deg);
}

/* Card details container */
.food-item-details {
    padding: 0 var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + 4px);
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.01);
    animation: cardDetailsSlide 0.3s var(--transition-spring) forwards;
}

@keyframes cardDetailsSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.food-item-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    padding-top: var(--spacing-sm);
}

.food-item-safe-portion {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--background);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
}

/* ===== PANEL 2: MY TOLERANCE (DASHBOARD) ===== */
.dashboard-header-section {
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-md);
}

.dashboard-header-section h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.dashboard-header-section p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    cursor: pointer;
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
}

.stat-card.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    background: var(--surface-hover);
}

.stat-icon {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
}

.stat-card.stat-safe .stat-icon { background: var(--green-light); }
.stat-card.stat-moderate .stat-icon { background: var(--yellow-light); }
.stat-card.stat-problematic .stat-icon { background: var(--red-light); }
.stat-card.stat-untested .stat-icon { background: var(--grey-light); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-count {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ===== PANEL 3: SETTINGS ===== */
.settings-group {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.settings-group-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.settings-description-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.settings-row.vertical-layout {
    flex-direction: column;
    align-items: flex-start;
}

.settings-row-label {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.settings-row-label span {
    font-weight: 600;
    color: var(--text-primary);
}

.settings-row-label small {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

/* iOS Toggle Switch */
.switch-toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}

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

.switch-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: rgba(120, 120, 128, 0.16);
    border-radius: 34px;
    transition: background-color var(--transition-fast);
}

.switch-slider::before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 3px 8px rgba(0,0,0,0.15);
    transition: transform var(--transition-spring);
}

.switch-toggle input:checked + .switch-slider {
    background-color: var(--green);
}

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

/* iOS Segmented Control (Text Size) */
.segmented-control {
    display: flex;
    background: rgba(120, 120, 128, 0.12);
    padding: 3px;
    border-radius: var(--radius-sm);
    width: 100%;
}

.segmented-option {
    flex: 1;
    position: relative;
    text-align: center;
    cursor: pointer;
}

.segmented-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.segmented-option span {
    display: block;
    padding: 0.5rem 0.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: calc(var(--radius-sm) - 2px);
    transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.segmented-option input:checked + span {
    background: white;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .segmented-option input:checked + span {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

/* Settings Info Row */
.settings-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.settings-info-row:last-child {
    border-bottom: none;
}

/* Settings Buttons */
.btn-primary, .btn-secondary {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    opacity: 0.8;
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: rgba(120, 120, 128, 0.12);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(120, 120, 128, 0.2);
}

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

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Hidden Foods List in Settings */
.hidden-foods-settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 250px;
    overflow-y: auto;
    padding-right: 4px;
}

/* ===== BOTTOM NAVIGATION BAR (Mobile & Tablet) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px) saturate(190%);
    -webkit-backdrop-filter: blur(20px) saturate(190%);
    border-top: 1px solid var(--border);
    justify-content: space-around;
    align-items: center;
    z-index: 99;
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .bottom-nav {
    background: rgba(20, 20, 25, 0.75);
}

.bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 4px 12px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.65rem;
    font-weight: 600;
    border-radius: 0;
    box-shadow: none;
    flex: 1;
}

.bottom-nav .nav-item svg {
    width: 22px;
    height: 22px;
    transition: transform var(--transition-fast);
}

.bottom-nav .nav-item:hover {
    background: transparent;
    color: var(--text-primary);
    transform: none;
}

.bottom-nav .nav-item.active {
    color: var(--primary) !important;
    background: transparent !important;
    box-shadow: none !important;
}

.bottom-nav .nav-item.active svg {
    color: var(--primary);
    transform: scale(1.08);
}

/* ===== BOTTOM SHEET MODALS (Mobile Redesign) ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity var(--transition-smooth);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal {
    width: 100%;
    max-width: 500px;
    background: #ffffff; /* Opaque: brightness stays constant on focus/keyboard */
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

[data-theme="dark"] .modal {
    background: #1c1c22;
}

.sheet-drag-handle {
    display: none;
    width: 36px;
    height: 5px;
    background: var(--border-hover);
    border-radius: 99px;
    margin: 8px auto 0;
    flex-shrink: 0;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.modal-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-content {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Buttons in dialog headers */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(0,0,0,0.04);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}
[data-theme="dark"] .icon-btn {
    background: rgba(255,255,255,0.06);
}
.icon-btn:hover {
    background: rgba(0,0,0,0.08);
    transform: scale(1.05);
}

/* Text Buttons styling */
.text-btn {
    padding: 0.75rem var(--spacing-lg);
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.secondary-btn {
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
}
[data-theme="dark"] .secondary-btn {
    background: rgba(255, 255, 255, 0.06);
}
.secondary-btn:hover {
    background: rgba(0, 0, 0, 0.08);
}

/* Filter components layout */
.filter-groups {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

/* Quick Filter Preset Grid */
.quick-filter-presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: var(--spacing-sm);
}

.quick-filter-preset {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: rgba(0,0,0,0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}
[data-theme="dark"] .quick-filter-preset {
    background: rgba(255,255,255,0.02);
}
.quick-filter-preset:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

.preset-icon {
    font-size: 1.1rem;
}

/* Fructan checkbox badges in filters */
.level-filters {
    display: flex;
    gap: var(--spacing-xs);
}

.level-filter-chip {
    flex: 1;
    position: relative;
    cursor: pointer;
}

.level-filter-chip input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.level-filter-chip .level-badge {
    display: block;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 99px;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.level-filter-chip.green .level-badge { background: rgba(52, 199, 89, 0.05); color: var(--green); }
.level-filter-chip.green input:checked + .level-badge { background: var(--green); color: white; border-color: var(--green); }

.level-filter-chip.yellow .level-badge { background: rgba(255, 149, 0, 0.05); color: var(--yellow); }
.level-filter-chip.yellow input:checked + .level-badge { background: var(--yellow); color: white; border-color: var(--yellow); }

.level-filter-chip.red .level-badge { background: rgba(255, 59, 48, 0.05); color: var(--red); }
.level-filter-chip.red input:checked + .level-badge { background: var(--red); color: white; border-color: var(--red); }

/* Sort Radio buttons */
.sort-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sort-radio-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0,0,0,0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}
[data-theme="dark"] .sort-radio-option {
    background: rgba(255,255,255,0.02);
}

.sort-radio-option input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.sort-radio-option:hover {
    border-color: var(--primary);
}

.filter-actions-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.filter-actions-row button {
    flex: 1;
}

/* Notes section detail stylings inside sheet */
.notes-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background: var(--surface-active); /* Bright card, constant in every state */
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
[data-theme="dark"] .notes-section {
    background: #26262c;
}

.notes-section h3 {
    font-size: 0.95rem;
    font-weight: 700;
}

.structured-notes {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.note-option {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.note-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.note-select, 
.note-input, 
.notes-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    background: var(--background);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}
.note-select:focus,
.note-input:focus,
.notes-textarea:focus {
    outline: none;
    /* No border-color change: card must look identical whether or not it is focused.
       Keyboard users still get the global :focus-visible outline. */
}

.notes-textarea {
    min-height: 80px;
    resize: none;
}

/* ===== SKELETON LOADER ===== */
.skeleton-loader {
    width: 100%;
}
.skeleton-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}
.skeleton-title {
    width: 120px;
    height: 20px;
    background: rgba(0,0,0,0.06);
    border-radius: 4px;
}
.skeleton-count {
    width: 60px;
    height: 20px;
    background: rgba(0,0,0,0.06);
    border-radius: 99px;
}
.skeleton-row {
    height: 60px;
    width: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.04) 25%, rgba(0,0,0,0.08) 50%, rgba(0,0,0,0.04) 75%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}
[data-theme="dark"] .skeleton-row {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
}
@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== EMPTY STATE ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}
.empty-state svg {
    margin-bottom: var(--spacing-md);
    color: var(--text-tertiary);
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translate(-50%, 40px);
    background: rgba(20, 20, 20, 0.9);
    color: white;
    padding: 0.75rem var(--spacing-lg);
    border-radius: 99px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.35s ease;
}
.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}
[data-theme="dark"] .toast {
    background: rgba(240, 240, 245, 0.95);
    color: #121212;
}

/* ===== PWA UPDATE BANNER ===== */
.update-banner {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 1000;
    animation: bannerSlideIn 0.4s var(--transition-spring) forwards;
}

@keyframes bannerSlideIn {
    from { transform: translate(-50%, -40px); opacity: 0; }
    to { transform: translate(-50%, 0); opacity: 1; }
}

.update-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
}

.update-btn {
    background: white;
    color: var(--primary);
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}
.update-btn:hover {
    opacity: 0.9;
}

/* ===== MOBILE MEDIA QUERIES (Redesign execution) ===== */
@media (max-width: 768px) {
    /* Layout refactor */
    .app-shell {
        flex-direction: column;
    }
    
    .sidebar-nav {
        display: none; /* Hide desktop sidebar */
    }
    
    .main-content-wrapper {
        padding-bottom: 74px; /* Space for bottom-nav bar */
    }
    
    .bottom-nav {
        display: flex; /* Show mobile bottom-nav bar */
    }
    
    .main-content {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .app-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .app-title {
        font-size: 1.35rem;
    }
    
    .search-filter-section {
        padding: var(--spacing-sm);
    }
    
    .search-bar-row {
        gap: var(--spacing-xs);
    }
    
    .filter-toggle-btn {
        padding: var(--spacing-sm);
    }
    
    .filter-btn-text {
        display: none; /* Hide text to save space on small viewports */
    }
    
    /* Food card optimizations for mobile touch */
    .food-item {
        border-radius: var(--radius-sm);
    }
    
    .food-item-header {
        padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) calc(var(--spacing-sm) + 4px);
    }
    
    .food-item-name {
        font-size: 1rem;
    }
    
    .food-item-meta {
        margin-top: 0.25rem;
    }
    
    /* Bottom Sheet slide-up styling */
    .modal-overlay {
        align-items: flex-end;
    }
    
    .modal.bottom-sheet {
        max-width: 100%;
        max-height: 85vh;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        border-bottom: none;
        transform: translateY(100%);
        transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .modal-overlay:not(.hidden) .modal.bottom-sheet {
        transform: translateY(0);
    }
    
    .sheet-drag-handle {
        display: block; /* Show drag bar like iOS sheet */
    }
    
    .modal-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .modal-content {
        padding: var(--spacing-md);
    }
    
    /* Stats Grid layout on mobile */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .stat-icon {
        width: 38px;
        height: 38px;
        font-size: 1.4rem;
    }
    
    .stat-count {
        font-size: 1.35rem;
    }
    
    .stat-label {
        font-size: 0.725rem;
    }
    
    .settings-group {
        padding: var(--spacing-md);
    }
}

/* Extra small devices styling */
@media (max-width: 380px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .segmented-option span {
        font-size: 0.75rem;
    }
}

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

/* ===== Onboarding Redesign ===== */
.onboarding-container {
    width: 90%;
    max-width: 420px;
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-radius: var(--radius-lg);
}

.onboarding-slides {
    position: relative;
    min-height: 230px;
    margin-bottom: var(--spacing-md);
}

.onboarding-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.96) translateY(10px);
    transition: opacity var(--transition-smooth), transform var(--transition-spring);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.onboarding-slide.active {
    opacity: 1;
    pointer-events: all;
    transform: scale(1) translateY(0);
}

.onboarding-icon {
    font-size: 3.5rem;
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.onboarding-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.onboarding-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.onboarding-colors {
    display: flex;
    gap: 8px;
    margin-top: var(--spacing-md);
}

.onboarding-colors .color-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}

.onboarding-colors .color-indicator.green { background: var(--green-light); color: var(--green); }
.onboarding-colors .color-indicator.yellow { background: var(--yellow-light); color: var(--yellow); }
.onboarding-colors .color-indicator.red { background: var(--red-light); color: var(--red); }

.onboarding-colors .color-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}
.onboarding-colors .color-indicator.green .color-dot { background: var(--green); }
.onboarding-colors .color-indicator.yellow .color-dot { background: var(--yellow); }
.onboarding-colors .color-indicator.red .color-dot { background: var(--red); }

.onboarding-navigation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.onboarding-dots {
    display: flex;
    gap: 6px;
}

.onboarding-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--border-hover);
    transition: all var(--transition-fast);
}

.onboarding-dot.active {
    width: 18px;
    background: var(--primary);
    border-radius: 3px;
}

.onboarding-buttons {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
}

.onboarding-btn {
    flex: 1;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.onboarding-btn.secondary {
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-secondary);
}
[data-theme="dark"] .onboarding-btn.secondary {
    background: rgba(255, 255, 255, 0.06);
}
.onboarding-btn.secondary:hover {
    background: rgba(0, 0, 0, 0.08);
}

/* ===== Food Details (Bottom Sheet / Compact redesign) ===== */
.detail-props-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.prop-box {
    background: rgba(0,0,0,0.02);
    border: 1px solid var(--border);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
}
[data-theme="dark"] .prop-box {
    background: rgba(255,255,255,0.02);
}

.prop-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.prop-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.detail-desc {
    font-size: 0.85rem;
    line-height: 1.45;
    color: var(--text-secondary);
    background: rgba(0,0,0,0.01);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--border-hover);
    margin-bottom: var(--spacing-sm);
}

.notes-flex-row {
    display: flex;
    gap: var(--spacing-sm);
}
.notes-flex-row .note-option {
    flex: 1;
}

/* Tolerance Segmented Button selector */
.tolerance-button-group {
    display: flex;
    gap: 6px;
    width: 100%;
    margin-bottom: var(--spacing-xs);
}

.tolerance-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px 4px;
    border: 1px solid var(--border);
    background: var(--background);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    gap: 2px;
}

.tolerance-btn .emoji {
    font-size: 1.1rem;
}

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

.tolerance-btn.active {
    color: white !important;
}

.tolerance-btn.active[data-val="safe"] { background: var(--green); border-color: var(--green); box-shadow: 0 2px 8px var(--green-light); }
.tolerance-btn.active[data-val="moderate"] { background: var(--yellow); border-color: var(--yellow); box-shadow: 0 2px 8px var(--yellow-light); }
.tolerance-btn.active[data-val="problematic"] { background: var(--red); border-color: var(--red); box-shadow: 0 2px 8px var(--red-light); }
.tolerance-btn.active[data-val="untested"] { background: var(--text-secondary); border-color: var(--text-secondary); }

/* ===== Search Suggestions & History dropdowns ===== */
.search-suggestions-container {
    position: relative;
    width: 100%;
    z-index: 100;
}

.search-suggestions {
    position: absolute;
    top: 4px;
    left: 0;
    right: 0;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 250px;
    overflow-y: auto;
    z-index: 999;
}

.suggestion-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-fast);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--surface-hover);
}

.suggestion-icon {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.suggestion-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.suggestion-match {
    color: var(--primary);
    font-weight: 700;
}

.suggestion-category {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Recent searches history styling */
.recent-searches {
    margin-top: var(--spacing-sm);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
}

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

.recent-searches-header h3 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin: 0;
}

.clear-history-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-history-btn:hover {
    background: var(--surface-hover);
    color: var(--red);
}

.recent-searches-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.recent-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px var(--spacing-sm);
    background: rgba(0,0,0,0.01);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}
[data-theme="dark"] .recent-search-item {
    background: rgba(255,255,255,0.01);
}

.recent-search-item:hover {
    background: var(--surface-hover);
    border-color: var(--border);
}

.recent-search-item .search-text {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
    flex: 1;
}

.recent-search-item .search-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-right: var(--spacing-sm);
}

.remove-search {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px;
    border-radius: 50%;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-search:hover {
    background: var(--surface-active);
    color: var(--red);
}

/* Explicit Dark Mode Overrides for Buttons, Chips, and Select options */
.quick-filter-preset {
    color: var(--text-primary);
}

[data-theme="dark"] .quick-filter-preset {
    background: rgba(255, 255, 255, 0.04);
}
[data-theme="dark"] .quick-filter-preset:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
}

[data-theme="dark"] .filter-chip {
    background: rgba(255, 255, 255, 0.04);
}
[data-theme="dark"] .filter-chip:hover {
    background: rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .filter-chip.active {
    background: var(--primary);
    color: white;
}

[data-theme="dark"] .sort-radio-option {
    background: rgba(255, 255, 255, 0.03);
}
[data-theme="dark"] .sort-radio-option:hover {
    background: rgba(255, 255, 255, 0.06);
}

.note-select option {
    background-color: var(--background);
    color: var(--text-primary);
}

/* ===== PWA Install Toast ===== */
.pwa-install-toast {
    position: fixed;
    bottom: calc(var(--spacing-lg) + 60px); /* Height of bottom nav + spacing on mobile */
    left: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 2000; /* Over everything */
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    animation: slideUp var(--transition-smooth);
    border: 1px solid var(--border);
}

@media (min-width: 769px) {
    .pwa-install-toast {
        left: auto;
        right: var(--spacing-lg);
        bottom: var(--spacing-lg);
        width: 340px;
    }
}

.pwa-install-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.pwa-install-content .pwa-icon {
    font-size: 2.2rem;
    flex-shrink: 0;
}

.pwa-install-content h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 2px 0;
    color: var(--text-primary);
}

.pwa-install-content p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.35;
    margin: 0;
}

.pwa-install-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: 4px;
}

.pwa-install-actions button {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

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