:root {

    --primary-color: #4299e1;
    --primary-color-transparent: #4299e152;
    /* Light mode variables (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f7fa;
    --bg-tertiary: #edf2f7;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
    --sidebar-bg: #ffffff;
    --nav-item-hover: #f7fafc;
    --nav-item-active: #ebf8ff;
    --btn-primary-bg: #4299e1;
    --btn-primary-hover: #3182ce;
    --btn-primary-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: #e1e4e8;
    --input-focus-border: #4299e1;
    --input-focus-shadow: 0 0 0 3px rgba(66, 153, 225, 0.15);
    --lesson-item-bg: #ffffff;
    --lesson-item-border: #e5e7eb;
    --week-nav-btn-bg: #f3f4f6;
    --week-nav-btn-border: #e5e7eb;
    --top-message-bg: #ffffff;
    --login-page-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --error-text: #e53e3e;
    --success-bg: #c6f6d5;
    --success-text: #276749;
    --warning-bg: #feebc8;
    --warning-text: #c05621;
    --info-bg: #ebf8ff;
    --info-text: #2b6cb0;
    --overlay-bg: rgba(0, 0, 0, 0.7);
    --message-box-bg: #ffffff;
    --message-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    --close-btn-color: #ffffff;
    --close-btn-border: #ffffff;
    --section-title-color: #2d3748;
    --section-border: #edf2f7;
    --result-card-border: #3182ce;
    --older-result-border: #718096;
    --result-card-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --result-card-hover-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
    --clickable-hover-bg: #f7fafc;
    --clickable-hover-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    --loader-border: rgba(0, 0, 0, 0.1);
    --loader-border-top: #4299e1;
    --skeleton-bg: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);

    /* Lunch Menu Variables */
    --lunch-menu-bg: var(--bg-secondary);
    --lunch-day-bg: var(--card-bg);
    --lunch-day-border: var(--border-color);
    --lunch-day-shadow: var(--card-shadow);
    --lunch-day-header-bg: var(--bg-tertiary);
    --lunch-day-header-text: var(--text-primary);
    --lunch-dish-text: var(--text-secondary);
    --lunch-current-day-outline: var(--primary-color);
    --lunch-current-day-bg: var(--primary-color-transparent);
    /* Optional, used for glow */
}

/* Dark mode styles */
[data-theme="dark"] {
    --bg-primary: #121212;
    /* deep blackish background */
    --bg-secondary: #1e1e1e;
    /* slightly lighter for cards */
    --bg-tertiary: #2a2a2a;
    /* hover/contrast layers */

    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    /* softer gray */
    --text-muted: #9ca3af;
    /* even lighter for hints */

    --border-color: #2f2f2f;
    --card-bg: #1e1e1e;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);

    --sidebar-bg: rgba(18, 18, 18, 0.9);
    /* slight transparency = modern */
    --nav-item-hover: rgba(255, 255, 255, 0.05);
    --nav-item-active: #0ea5e9;
    /* cyan highlight */

    --btn-primary-bg: #0ea5e9;
    /* cyan accent */
    --btn-primary-hover: #0284c7;
    --btn-primary-text: #ffffff;

    --input-bg: #1e1e1e;
    --input-border: #2f2f2f;
    --input-focus-border: #0ea5e9;
    --input-focus-shadow: 0 0 0 3px rgba(14, 165, 233, 0.25);

    --lesson-item-bg: #1e1e1e;
    --lesson-item-border: #2f2f2f;

    --week-nav-btn-bg: #1e1e1e;
    --week-nav-btn-border: #2f2f2f;

    --top-message-bg: #1e1e1e;
    --login-page-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    /* dark blue gradient */

    --error-text: #f87171;
    --success-bg: #065f46;
    --success-text: #34d399;
    --warning-bg: #92400e;
    --warning-text: #fbbf24;
    --info-bg: #1e3a8a;
    --info-text: #93c5fd;

    --overlay-bg: rgba(0, 0, 0, 0.7);

    --message-box-bg: #1e1e1e;
    --message-box-shadow: 0 5px 25px rgba(0, 0, 0, 0.6);

    --close-btn-color: #d1d5db;
    --close-btn-border: #2f2f2f;

    --section-title-color: #e5e7eb;
    --section-border: #2f2f2f;

    --result-card-border: #0ea5e9;
    --older-result-border: #6b7280;
    --result-card-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    --result-card-hover-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);

    --clickable-hover-bg: rgba(255, 255, 255, 0.05);
    --clickable-hover-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);

    --loader-border: rgba(255, 255, 255, 0.1);
    --loader-border-top: #0ea5e9;

    --skeleton-bg: linear-gradient(90deg,
            #1e1e1e 25%,
            #2a2a2a 50%,
            #1e1e1e 75%);


    /* Lunch Menu Variables */
    --lunch-menu-bg: var(--bg-secondary);
    --lunch-day-bg: var(--card-bg);
    --lunch-day-border: var(--border-color);
    --lunch-day-shadow: var(--card-shadow);
    --lunch-day-header-bg: var(--bg-tertiary);
    --lunch-day-header-text: var(--text-primary);
    --lunch-dish-text: var(--text-secondary);
    --lunch-current-day-outline: var(--primary-color);
    --lunch-current-day-bg: var(--primary-color-transparent);
    /* Optional, used for glow */
}


/* High Contrast Mode variables */
[data-high-contrast="true"] {
    --bg-primary: #000000;
    --bg-secondary: #121212;
    --bg-tertiary: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #f0f0f0;
    --text-muted: #cccccc;
    --border-color: #ffffff;
    --card-bg: #121212;
    --card-shadow: 0 0 0 2px #ffffff;
    --sidebar-bg: #000000;
    --nav-item-hover: #333333;
    --nav-item-active: #0066cc;
    --btn-primary-bg: #0066cc;
    --btn-primary-hover: #0052a3;
    --btn-primary-text: #ffffff;
    --input-bg: #000000;
    --input-border: #ffffff;
    --input-focus-border: #ffff00;
    --input-focus-shadow: 0 0 0 3px rgba(255, 255, 0, 0.5);
    --lesson-item-bg: #121212;
    --lesson-item-border: #ffffff;
    --week-nav-btn-bg: #121212;
    --week-nav-btn-border: #ffffff;
    --top-message-bg: #121212;
    --error-text: #ff6666;
    --success-bg: #006600;
    --success-text: #99ff99;
    --warning-bg: #663300;
    --warning-text: #ffcc66;
    --info-bg: #003366;
    --info-text: #99ccff;
    --overlay-bg: rgba(0, 0, 0, 0.9);
    --message-box-bg: #121212;
    --message-box-shadow: 0 0 0 2px #ffffff;
    --close-btn-color: #ffffff;
    --close-btn-border: #ffffff;
    --section-title-color: #ffffff;
    --section-border: #ffffff;
    --result-card-border: #ffffff;
    --older-result-border: #cccccc;
    --result-card-shadow: 0 0 0 1px #ffffff;
    --result-card-hover-shadow: 0 0 0 2px #ffffff;
    --clickable-hover-bg: #333333;
    --clickable-hover-shadow: 0 0 0 1px #ffffff;
    --loader-border: rgba(255, 255, 255, 0.5);
    --loader-border-top: #ffffff;
    --skeleton-bg: linear-gradient(90deg, #121212 25%, #333333 50%, #121212 75%);

    /* Lunch Menu Variables */
    --lunch-menu-bg: var(--bg-primary);
    --lunch-day-bg: var(--card-bg);
    --lunch-day-border: var(--border-color);
    --lunch-day-shadow: none;
    /* No shadow in HC */
    --lunch-day-header-bg: var(--bg-secondary);
    --lunch-day-header-text: var(--text-primary);
    --lunch-dish-text: var(--text-primary);
    --lunch-current-day-outline: var(--input-focus-border);
    /* Bright yellow for HC */
    --lunch-current-day-bg: transparent;
    /* No bg glow in HC, rely on outline */
}


/* Settings page styles */
.setting-item {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.setting-item label {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-color);
}

.setting-toggle {
    position: relative;
    width: 50px;
    height: 24px;
    appearance: none;
    background-color: #ccc;
    border-radius: 12px;
    transition: background-color 0.3s;
    cursor: pointer;
    align-self: flex-start;
}

.setting-toggle:checked {
    background-color: var(--primary-color, #3182ce);
}

.setting-toggle:before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    background-color: white;
    transition: transform 0.3s;
}

.setting-toggle:checked:before {
    transform: translateX(26px);
}

.setting-select {
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 14px;
    max-width: 200px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.nav-item.active {
    background-color: var(--primary-color-transparent) !important;
}

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

.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.primary-btn {
    background-color: var(--primary-color, #3182ce);
    color: white;
}

.primary-btn:hover {
    background-color: #2c5282;
}

.secondary-btn {
    background-color: #e2e8f0;
    color: #4a5568;
}

.secondary-btn:hover {
    background-color: #cbd5e0;
}

.danger-btn {
    background-color: #f56565;
    color: white;
}

.danger-btn:hover {
    background-color: #e53e3e;
}

/* Font size variables */
:root[data-font-size="small"] {
    --base-font-size: 14px;
}

:root[data-font-size="medium"] {
    --base-font-size: 16px;
}

:root[data-font-size="large"] {
    --base-font-size: 18px;
}

/* Accent color variables */
:root[data-accent-color="blue"] {
    --primary-color: #3182ce;
    --primary-color-transparent: #3182ce52;
}

:root[data-accent-color="green"] {
    --primary-color: #38a169;
    --primary-color-transparent: #38a16952;
}

:root[data-accent-color="purple"] {
    --primary-color: #805ad5;
    --primary-color-transparent: #805ad552;
}

:root[data-accent-color="orange"] {
    --primary-color: #dd6b20;
    --primary-color-transparent: #dd6b2052;
}

/* Apply font size to elements */
body {
    font-size: var(--base-font-size, 16px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .setting-item {
        margin-bottom: 15px;
    }

    .checkbox-group {
        flex-direction: column;
        gap: 10px;
    }
}

#settings .card {
    margin-bottom: 20px !important;
}



/* Time format classes */
.time-format-12h .time-display {
    --time-format: '12h';
}

.time-format-24h .time-display {
    --time-format: '24h';
}