/* ===== Menubar Component Styles ===== */
    /* Standalone styles for the Menubar component (modules/menubar.js)
       Provides theming variables and styling for the top-bar across pages
       that don't include welcome.css. */
    
    :root {
        --mb-color-primary: #3498db;
        --mb-color-primary-hover: #2980b9;
        --mb-color-text: #333;
        --mb-color-heading: #2c3e50;
        --mb-color-bg: #ffffff;
        --mb-color-surface: #ffffff;
        --mb-color-surface-alt: #f8f9fa;
        --mb-color-border: #e1e4e8;
        --mb-color-border-strong: #d0d7de;
        --mb-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
        --mb-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
        --mb-radius-sm: 4px;
        --mb-radius-md: 6px;
        --mb-top-bar-height: 56px;
        --mb-transition-fast: 0.15s ease;
        --mb-transition-base: 0.2s ease;
    }
    
    /* ===== Top Bar ===== */
    .top-bar {
        position: sticky;
        top: 0;
        left: 0;
        right: 0;
        display: flex;
        align-items: center;
        z-index: 200;
        gap: 10px;
        padding: 8px 20px;
        height: var(--mb-top-bar-height);
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        box-shadow: var(--mb-shadow-md);
        border-bottom: 1px solid var(--mb-color-border);
        box-sizing: border-box;
    }
    
    .top-bar *,
    .top-bar *::before,
    .top-bar *::after {
        box-sizing: border-box;
    }
    
    /* ===== Logo ===== */
    .logo-container {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    
    .logo {
        width: 36px;
        height: 36px;
    }
    
    .logo-text {
        font-weight: 700;
        font-size: 1.2em;
        color: var(--mb-color-heading);
    }
    
    .logo-about-trigger {
        transition: color var(--mb-transition-base), opacity var(--mb-transition-base);
        border-radius: var(--mb-radius-sm);
        padding: 2px 4px;
    }
    
    .logo-about-trigger:hover,
    .logo-about-trigger:focus-visible {
        color: var(--mb-color-primary);
        outline: none;
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.25);
    }
    
    /* ===== Spacer ===== */
    .top-bar-spacer {
        flex: 1;
    }
    
    /* ===== Top Bar Buttons ===== */
    .top-bar-btn {
        background-color: var(--mb-color-primary);
        color: white;
        border: none;
        border-radius: var(--mb-radius-md);
        padding: 8px 16px;
        cursor: pointer;
        font-size: 0.95em;
        font-weight: 500;
        font-family: inherit;
        transition: background-color var(--mb-transition-base),
                    transform var(--mb-transition-fast),
                    box-shadow var(--mb-transition-base);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        white-space: nowrap;
        line-height: 1.2;
    }
    
    .top-bar-btn:hover {
        background-color: var(--mb-color-primary-hover);
        transform: translateY(-1px);
        box-shadow: var(--mb-shadow-sm);
    }
    
    .top-bar-btn:focus-visible {
        outline: none;
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.4);
    }
    
    .top-bar-btn:active {
        transform: translateY(0);
    }
    
    .btn-icon {
        font-size: 1.1em;
        line-height: 1;
    }
    
    /* ===== Theme / Layout Selector ===== */
    .theme-selector {
        background-color: var(--mb-color-surface);
        color: var(--mb-color-text);
        border: 1px solid var(--mb-color-border-strong);
        border-radius: var(--mb-radius-md);
        padding: 7px 10px;
        font-size: 0.9em;
        font-family: inherit;
        cursor: pointer;
        transition: border-color var(--mb-transition-base),
                    box-shadow var(--mb-transition-base);
    }
    
    .theme-selector:hover {
        border-color: var(--mb-color-primary);
    }
    
    .theme-selector:focus {
        outline: none;
        border-color: var(--mb-color-primary);
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
    }
    
    /* ===== Budget Warning States (used by some pages) ===== */
    #budget-btn.budget-warning {
        background-color: #e67e22;
        animation: mb-budget-pulse-warning 3s ease-in-out infinite;
    }
    
    #budget-btn.budget-warning:hover {
        background-color: #ca6f1e;
    }
    
    #budget-btn.budget-critical {
        background-color: #e74c3c;
        animation: mb-budget-pulse-critical 1.8s ease-in-out infinite;
    }
    
    #budget-btn.budget-critical:hover {
        background-color: #c0392b;
    }
    
    @keyframes mb-budget-pulse-warning {
        0%, 100% { box-shadow: 0 0 0 0 rgba(230, 126, 34, 0.0); }
        50%      { box-shadow: 0 0 0 5px rgba(230, 126, 34, 0.35); }
    }
    
    @keyframes mb-budget-pulse-critical {
        0%, 100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.0); }
        50%      { box-shadow: 0 0 0 6px rgba(231, 76, 60, 0.45); }
    }
    
    /* ===== Responsive ===== */
    @media (max-width: 480px) {
        .top-bar {
            padding: 6px 12px;
        }
    
        .logo-text {
            display: none;
        }
    
        .top-bar-btn {
            padding: 6px 12px;
            font-size: 0.9em;
        }
    }
    
    /* ===== Dark Mode (auto via prefers-color-scheme) ===== */
    @media (prefers-color-scheme: dark) {
        :root {
            --mb-color-text: #e0e0e0;
            --mb-color-heading: #e0e0e0;
            --mb-color-bg: #1e222e;
            --mb-color-surface: #1e222e;
            --mb-color-surface-alt: #262a36;
            --mb-color-border: #333;
            --mb-color-border-strong: #444;
        }
    
        .top-bar {
            background-color: rgba(30, 34, 46, 0.95);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            border-bottom-color: #333;
        }
    
        .theme-selector {
            background-color: #2a2e3a;
            color: #e0e0e0;
            border-color: #444;
        }
    }
    
    /* ===== Explicit Theme Overrides ===== */
    html[data-theme="light"] {
        --mb-color-text: #333;
        --mb-color-heading: #2c3e50;
        --mb-color-bg: #ffffff;
        --mb-color-surface: #ffffff;
        --mb-color-surface-alt: #f8f9fa;
        --mb-color-border: #e1e4e8;
        --mb-color-border-strong: #d0d7de;
    }
    
    html[data-theme="light"] .top-bar {
        background-color: rgba(255, 255, 255, 0.95);
        box-shadow: var(--mb-shadow-md);
        border-bottom-color: var(--mb-color-border);
    }
    
    html[data-theme="light"] .theme-selector {
        background-color: var(--mb-color-surface);
        color: var(--mb-color-text);
        border-color: var(--mb-color-border-strong);
    }
    
    html[data-theme="dark"] {
        --mb-color-text: #e0e0e0;
        --mb-color-heading: #e0e0e0;
        --mb-color-bg: #1e222e;
        --mb-color-surface: #1e222e;
        --mb-color-surface-alt: #262a36;
        --mb-color-border: #333;
        --mb-color-border-strong: #444;
    }
    
    html[data-theme="dark"] .top-bar {
        background-color: rgba(30, 34, 46, 0.95);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        border-bottom-color: #333;
    }
    
    html[data-theme="dark"] .theme-selector {
        background-color: #2a2e3a;
        color: #e0e0e0;
        border-color: #444;
    }