/**
 * Unified Sidebar Styles
 * Consolidates 6 individual sidebar CSS files into one DRY system.
 *
 * Sidebars: help, developer, network, learning, kg, personal
 * Design:   Glassmorphism, collapsible, draggable, viewport-responsive
 * Colors:   Per-sidebar accent via --sb-r / --sb-g / --sb-b custom properties
 *
 * Replaces: help-sidebar.css, developer-sidebar.css, network-sidebar.css,
 *           learning-sidebar.css, kg-sidebar.css, personal-sidebar.css
 */

/* ============================================================================
   1. ACCENT COLOR DEFINITIONS (per sidebar)
   ============================================================================ */

.help-sidebar      { --sb-r: 94;  --sb-g: 234; --sb-b: 212; } /* Teal    #5eead4 */
.developer-sidebar { --sb-r: 121; --sb-g: 211; --sb-b: 255; } /* Cyan    #79d3ff */
.network-sidebar   { --sb-r: 251; --sb-g: 191; --sb-b: 36;  } /* Orange  #fbbf24 */
.learning-sidebar  { --sb-r: 167; --sb-g: 139; --sb-b: 250; } /* Purple  #a78bfa */
.kg-sidebar        { --sb-r: 56;  --sb-g: 189; --sb-b: 248; } /* Sky     #38bdf8 */
.personal-sidebar  { --sb-r: 16;  --sb-g: 185; --sb-b: 129; } /* Green   #10b981 */
.business-sidebar  { --sb-r: 251; --sb-g: 168; --sb-b: 52;  } /* Amber   #fba834 */

/* ============================================================================
   2. MAIN CONTAINER (shared)
   ============================================================================ */

.business-sidebar,
.help-sidebar,
.developer-sidebar,
.network-sidebar,
.learning-sidebar,
.kg-sidebar,
.personal-sidebar {
    position: fixed;
    z-index: var(--z-dropdown, 1000);
    display: flex;
    flex-direction: column;
    width: 96px;
    box-sizing: border-box;
    gap: 4px;
    padding: 10px 8px;
    background: var(--glass-bg-dark, rgba(15, 23, 42, 0.85));
    backdrop-filter: blur(var(--glass-blur-md, 16px));
    -webkit-backdrop-filter: blur(var(--glass-blur-md, 16px));
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.1));
    border-radius: var(--radius-xl, 16px);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    transition: all 0.3s ease;
    cursor: default;
    pointer-events: auto;
}

.business-sidebar:hover,
.help-sidebar:hover,
.developer-sidebar:hover,
.network-sidebar:hover,
.learning-sidebar:hover,
.kg-sidebar:hover,
.personal-sidebar:hover {
    background: var(--glass-bg-dark, rgba(15, 23, 42, 0.9));
    border-color: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.3);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.1);
}

/* ============================================================================
   3. DEFAULT POSITIONS — viewport-responsive with clamp()
   ============================================================================ */

/* Left column (stacked vertically) */
.business-sidebar {
    left: 10px;
    top: clamp(80px, 10vh, 120px);
}

.help-sidebar {
    left: 10px;
    top: clamp(120px, 18vh, 200px);
}

.developer-sidebar {
    left: 10px;
    top: clamp(280px, 40vh, 420px);
}

/* Top row (horizontally distributed) */
.network-sidebar {
    left: max(120px, calc(25vw - 10px));
    top: clamp(80px, 10vh, 140px);
}

.learning-sidebar {
    left: max(230px, calc(25vw + 100px));
    top: clamp(80px, 10vh, 140px);
}

.kg-sidebar {
    left: max(340px, calc(50vw - 10px));
    top: clamp(80px, 10vh, 140px);
}

.personal-sidebar {
    left: max(450px, calc(50vw + 100px));
    top: clamp(80px, 10vh, 140px);
}

/* ============================================================================
   4. DRAG HANDLE
   ============================================================================ */

.business-sidebar-handle,
.help-sidebar-handle,
.developer-sidebar-handle,
.network-sidebar-handle,
.learning-sidebar-handle,
.kg-sidebar-handle,
.personal-sidebar-handle {
    width: 100%;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
    border-radius: var(--radius-md, 8px);
    background: rgba(255, 255, 255, 0.03);
    margin-bottom: 4px;
    transition: background 0.2s ease;
}

.business-sidebar-handle:hover,
.help-sidebar-handle:hover,
.developer-sidebar-handle:hover,
.network-sidebar-handle:hover,
.learning-sidebar-handle:hover,
.kg-sidebar-handle:hover,
.personal-sidebar-handle:hover {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.15);
}

.business-sidebar-handle:active,
.help-sidebar-handle:active,
.developer-sidebar-handle:active,
.network-sidebar-handle:active,
.learning-sidebar-handle:active,
.kg-sidebar-handle:active,
.personal-sidebar-handle:active {
    cursor: grabbing;
}

.business-sidebar-dots,
.help-sidebar-dots,
.developer-sidebar-dots,
.network-sidebar-dots,
.learning-sidebar-dots,
.kg-sidebar-dots,
.personal-sidebar-dots {
    font-size: 10px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================================================
   5. DRAGGING STATE
   ============================================================================ */

.business-sidebar.dragging,
.help-sidebar.dragging,
.developer-sidebar.dragging,
.network-sidebar.dragging,
.learning-sidebar.dragging,
.kg-sidebar.dragging,
.personal-sidebar.dragging {
    opacity: 0.9;
    transform: scale(1.02);
    transition: none;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 30px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.2);
}

/* ============================================================================
   6. SIDEBAR LABEL
   ============================================================================ */

.business-sidebar-label,
.help-sidebar-label,
.developer-sidebar-label,
.network-sidebar-label,
.learning-sidebar-label,
.kg-sidebar-label,
.personal-sidebar-label {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.75);
    text-align: center;
    padding: 4px 0;
    margin-bottom: 4px;
    border-bottom: 1px solid rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.2);
}

.business-sidebar-mode-label {
    font-size: 7px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: rgba(255, 255, 255, 0.54);
    text-align: center;
    margin-top: -1px;
}

.business-sidebar-mode-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 100%;
    margin-bottom: 4px;
}

.business-sidebar-mode-btn {
    width: 22px;
    height: 22px;
    padding: 0;
    flex: 0 0 22px;
    border-radius: var(--radius-md, 8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.business-sidebar-mode-btn:hover {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.14);
    border-color: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.28);
    color: rgba(255, 255, 255, 0.88);
}

.business-sidebar-mode-btn.active,
.business-sidebar-mode-btn[aria-pressed="true"] {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.22);
    border-color: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.42);
    box-shadow: 0 0 12px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.18);
}

.business-sidebar-mode-icon {
    display: inline-grid;
    align-items: end;
    justify-items: center;
    color: rgba(255, 255, 255, 0.78);
    width: 12px;
    height: 12px;
}

.business-sidebar-mode-btn.active .business-sidebar-mode-icon,
.business-sidebar-mode-btn[aria-pressed="true"] .business-sidebar-mode-icon {
    color: rgba(255, 255, 255, 0.96);
}

.business-sidebar-mode-icon-all {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 2px;
}

.business-sidebar-mode-icon-all span {
    width: 4px;
    height: 4px;
    border-radius: 999px;
    background: currentColor;
}

.business-sidebar-mode-icon-startup,
.business-sidebar-mode-icon-enterprise {
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}

.business-sidebar-mode-icon-startup span,
.business-sidebar-mode-icon-enterprise span {
    width: 3px;
    border-radius: 999px;
    background: currentColor;
}

.business-sidebar-mode-icon-startup span:nth-child(1) {
    height: 4px;
}

.business-sidebar-mode-icon-startup span:nth-child(2) {
    height: 7px;
}

.business-sidebar-mode-icon-startup span:nth-child(3) {
    height: 10px;
}

.business-sidebar-mode-icon-enterprise span:nth-child(1),
.business-sidebar-mode-icon-enterprise span:nth-child(2),
.business-sidebar-mode-icon-enterprise span:nth-child(3) {
    height: 9px;
}

.business-sidebar-tools {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.business-sidebar-group-label {
    font-size: 7px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.1px;
    color: rgba(255, 255, 255, 0.42);
    text-align: center;
    padding: 3px 0 1px;
}

.business-sidebar-group-divider {
    margin: 4px 8px 2px;
    opacity: 0.75;
}

/* ============================================================================
   7. SIDEBAR BUTTONS
   ============================================================================ */

.business-sidebar-btn,
.help-sidebar-btn,
.developer-sidebar-btn,
.network-sidebar-btn,
.learning-sidebar-btn,
.kg-sidebar-btn,
.personal-sidebar-btn {
    width: 80px;
    height: 80px;
    padding: 2px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-xl, 16px);
    background: var(--glass-bg-light, rgba(255, 255, 255, 0.05));
    cursor: pointer !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    position: relative;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: auto !important;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    line-height: 1;
}

/* ═════════════════════════════════════════════════════════════════════
   Sidebar Toggle-All Button (fixed top-left, above logo)
   Centralized here to keep all sidebar look & feel in one place.
   ═════════════════════════════════════════════════════════════════════ */
.sidebar-toggle-all-btn {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: calc(var(--z-topbar, 65000) + 10);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: rgba(12, 18, 30, 0.65);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 7px;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: all 0.2s ease;
    pointer-events: auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.sidebar-toggle-all-btn:hover {
    background: rgba(12, 18, 30, 0.85);
    border-color: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.85);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    transform: scale(1.05);
}
.sidebar-toggle-all-btn:active {
    transform: scale(0.92);
}
.sidebar-toggle-all-btn.sidebars-hidden {
    color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.06);
}
.sidebar-toggle-all-btn.sidebars-hidden:hover {
    color: rgba(94, 234, 212, 0.7);
    border-color: rgba(94, 234, 212, 0.25);
}

.business-sidebar-btn:hover,
.help-sidebar-btn:hover,
.developer-sidebar-btn:hover,
.network-sidebar-btn:hover,
.learning-sidebar-btn:hover,
.kg-sidebar-btn:hover,
.personal-sidebar-btn:hover {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.15);
    border-color: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.5);
    transform: scale(1.12);
    box-shadow:
        0 6px 24px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.25),
        0 0 0 1px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.3) inset;
}

.business-sidebar-btn:active,
.help-sidebar-btn:active,
.developer-sidebar-btn:active,
.network-sidebar-btn:active,
.learning-sidebar-btn:active,
.kg-sidebar-btn:active,
.personal-sidebar-btn:active {
    transform: scale(0.95);
}

/* Active state (window open) */
.business-sidebar-btn.active,
.help-sidebar-btn.active,
.developer-sidebar-btn.active,
.network-sidebar-btn.active,
.learning-sidebar-btn.active,
.kg-sidebar-btn.active,
.personal-sidebar-btn.active,
.business-sidebar-btn[data-active="true"],
.help-sidebar-btn[data-active="true"],
.developer-sidebar-btn[data-active="true"],
.network-sidebar-btn[data-active="true"],
.learning-sidebar-btn[data-active="true"],
.kg-sidebar-btn[data-active="true"],
.personal-sidebar-btn[data-active="true"] {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.25);
    border-color: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.6);
    box-shadow:
        0 0 20px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.3),
        0 0 0 2px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.15) inset;
}

.business-sidebar-btn.is-secondary:not(.active) {
    opacity: 0.62;
    transform: scale(0.96);
    filter: saturate(0.72);
}

.business-sidebar-btn.is-secondary:hover {
    opacity: 1;
    transform: scale(1.06);
    filter: saturate(1);
}

/* ============================================================================
   8. BUTTON ICONS
   ============================================================================ */

.business-sidebar-icon,
.help-sidebar-icon,
.developer-sidebar-icon,
.network-sidebar-icon,
.learning-sidebar-icon,
.kg-sidebar-icon,
.personal-sidebar-icon {
    width: 76px;
    height: 76px;
    object-fit: contain;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4));
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.business-sidebar-btn:hover .business-sidebar-icon,
.help-sidebar-btn:hover .help-sidebar-icon,
.developer-sidebar-btn:hover .developer-sidebar-icon,
.network-sidebar-btn:hover .network-sidebar-icon,
.learning-sidebar-btn:hover .learning-sidebar-icon,
.kg-sidebar-btn:hover .kg-sidebar-icon,
.personal-sidebar-btn:hover .personal-sidebar-icon {
    filter: drop-shadow(0 6px 12px rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.4));
    transform: scale(1.08);
}

/* Button label (optional — below icon) */
.business-sidebar-btn-label,
.help-sidebar-btn-label,
.developer-sidebar-btn-label,
.network-sidebar-btn-label,
.learning-sidebar-btn-label,
.kg-sidebar-btn-label,
.personal-sidebar-btn-label {
    font-size: 7px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* ============================================================================
   9. DIVIDER
   ============================================================================ */

.business-sidebar-divider,
.help-sidebar-divider,
.developer-sidebar-divider,
.network-sidebar-divider,
.learning-sidebar-divider,
.kg-sidebar-divider,
.personal-sidebar-divider {
    height: 1px;
    margin: 2px 8px;
    background: linear-gradient(90deg,
        transparent,
        rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.3),
        transparent);
}

/* ============================================================================
   10. TOOLTIP OVERRIDE (Tippy.js handles tooltips — disable CSS fallback)
   ============================================================================ */

#business-sidebar [data-tooltip]::before,
#business-sidebar [data-tooltip]::after,
#help-sidebar [data-tooltip]::before,
#help-sidebar [data-tooltip]::after,
#developer-sidebar [data-tooltip]::before,
#developer-sidebar [data-tooltip]::after,
#network-sidebar [data-tooltip]::before,
#network-sidebar [data-tooltip]::after,
#learning-sidebar [data-tooltip]::before,
#learning-sidebar [data-tooltip]::after,
#kg-sidebar [data-tooltip]::before,
#kg-sidebar [data-tooltip]::after,
#personal-sidebar [data-tooltip]::before,
#personal-sidebar [data-tooltip]::after {
    display: none !important;
    content: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

/* ============================================================================
   11. COLLAPSE / EXPAND TOGGLE
   ============================================================================ */

.business-sidebar-toggle,
.help-sidebar-toggle,
.developer-sidebar-toggle,
.network-sidebar-toggle,
.learning-sidebar-toggle,
.kg-sidebar-toggle,
.personal-sidebar-toggle {
    width: 100%;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius-md, 8px);
    background: rgba(255, 255, 255, 0.03);
    border: none;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    transition: all 0.2s ease;
    margin-top: 4px;
}

.business-sidebar-toggle:hover,
.help-sidebar-toggle:hover,
.developer-sidebar-toggle:hover,
.network-sidebar-toggle:hover,
.learning-sidebar-toggle:hover,
.kg-sidebar-toggle:hover,
.personal-sidebar-toggle:hover {
    background: rgba(var(--sb-r), var(--sb-g), var(--sb-b), 0.15);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================================================
   12. COLLAPSED STATE
   ============================================================================ */

.business-sidebar.collapsed,
.help-sidebar.collapsed,
.developer-sidebar.collapsed,
.network-sidebar.collapsed,
.learning-sidebar.collapsed,
.kg-sidebar.collapsed,
.personal-sidebar.collapsed {
    width: 96px;
    padding: 8px;
}

.business-sidebar.collapsed .business-sidebar-label,
.business-sidebar.collapsed .business-sidebar-mode-label,
.business-sidebar.collapsed .business-sidebar-mode-switch,
.business-sidebar.collapsed .business-sidebar-group-label,
.business-sidebar.collapsed .business-sidebar-tools,
.business-sidebar.collapsed .business-sidebar-btn,
.business-sidebar.collapsed .business-sidebar-divider,
.help-sidebar.collapsed .help-sidebar-label,
.help-sidebar.collapsed .help-sidebar-btn,
.help-sidebar.collapsed .help-sidebar-divider,
.developer-sidebar.collapsed .developer-sidebar-label,
.developer-sidebar.collapsed .developer-sidebar-btn,
.developer-sidebar.collapsed .developer-sidebar-divider,
.network-sidebar.collapsed .network-sidebar-label,
.network-sidebar.collapsed .network-sidebar-btn,
.network-sidebar.collapsed .network-sidebar-divider,
.learning-sidebar.collapsed .learning-sidebar-label,
.learning-sidebar.collapsed .learning-sidebar-btn,
.learning-sidebar.collapsed .learning-sidebar-divider,
.kg-sidebar.collapsed .kg-sidebar-label,
.kg-sidebar.collapsed .kg-sidebar-btn,
.kg-sidebar.collapsed .kg-sidebar-divider,
.personal-sidebar.collapsed .personal-sidebar-label,
.personal-sidebar.collapsed .personal-sidebar-btn,
.personal-sidebar.collapsed .personal-sidebar-divider {
    display: none;
}

.business-sidebar.collapsed .business-sidebar-toggle,
.help-sidebar.collapsed .help-sidebar-toggle,
.developer-sidebar.collapsed .developer-sidebar-toggle,
.network-sidebar.collapsed .network-sidebar-toggle,
.learning-sidebar.collapsed .learning-sidebar-toggle,
.kg-sidebar.collapsed .kg-sidebar-toggle,
.personal-sidebar.collapsed .personal-sidebar-toggle {
    height: auto;
    padding: 8px 6px;
    font-size: 11px;
    font-weight: 600;
}

/* ============================================================================
   12b. KG CREDIT BADGE — Mini credit indicator at KG sidebar bottom
   ============================================================================ */

.kg-credit-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    width: 100%;
    padding: 6px 4px;
    border: none;
    border-radius: var(--radius-md, 8px);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.75);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
    text-transform: none;
}

.kg-credit-badge:hover {
    background: rgba(99, 102, 241, 0.25);
    color: #fff;
    transform: scale(1.04);
}

.kg-credit-icon {
    font-size: 14px;
    line-height: 1;
}

.kg-credit-value {
    font-size: 8px;
    font-weight: 800;
    line-height: 1;
    min-height: 10px;
}

/* Color states */
.kg-credit-badge.cbw-low  { color: #f87171; }
.kg-credit-badge.cbw-free { color: #fbbf24; }
.kg-credit-badge.cbw-pro  { color: #a78bfa; }

/* Hidden in collapsed state */
.kg-sidebar.collapsed .kg-credit-badge {
    padding: 4px 2px;
    font-size: 8px;
}

/* ============================================================================
   13. RESPONSIVE — Tablet (≤ 768px)
   ============================================================================ */

@media (max-width: 768px) {
    /* Left-column sidebars: shift to bottom-left */
    .help-sidebar {
        left: 5px;
        top: auto;
        bottom: 180px;
    }

    .developer-sidebar {
        left: 5px;
        top: auto;
        bottom: 60px;
    }

    /* Top-row sidebars: reduce gaps, stack tighter */
    .network-sidebar {
        left: max(110px, calc(18vw));
        top: clamp(70px, 9vh, 120px);
    }

    .learning-sidebar {
        left: max(210px, calc(18vw + 100px));
        top: clamp(70px, 9vh, 120px);
    }

    .kg-sidebar {
        left: max(310px, calc(50vw - 40px));
        top: clamp(70px, 9vh, 120px);
    }

    .personal-sidebar {
        left: max(410px, calc(50vw + 60px));
        top: clamp(70px, 9vh, 120px);
    }

    /* Smaller buttons on tablet */
    .help-sidebar-btn,
    .developer-sidebar-btn,
    .network-sidebar-btn,
    .learning-sidebar-btn,
    .kg-sidebar-btn,
    .personal-sidebar-btn {
        width: 56px;
        height: 56px;
    }

    .help-sidebar-icon,
    .developer-sidebar-icon,
    .network-sidebar-icon,
    .learning-sidebar-icon,
    .kg-sidebar-icon,
    .personal-sidebar-icon {
        width: 52px;
        height: 52px;
    }
}

/* ============================================================================
   14. RESPONSIVE — Mobile (≤ 480px)
   ============================================================================ */

@media (max-width: 480px) {
    .help-sidebar,
    .developer-sidebar,
    .network-sidebar,
    .learning-sidebar,
    .kg-sidebar,
    .personal-sidebar {
        width: 64px;
        padding: 6px 4px;
        gap: 2px;
    }

    .help-sidebar-btn,
    .developer-sidebar-btn,
    .network-sidebar-btn,
    .learning-sidebar-btn,
    .kg-sidebar-btn,
    .personal-sidebar-btn {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }

    .help-sidebar-icon,
    .developer-sidebar-icon,
    .network-sidebar-icon,
    .learning-sidebar-icon,
    .kg-sidebar-icon,
    .personal-sidebar-icon {
        width: 44px;
        height: 44px;
    }

    /* Stack all sidebars along left edge on very small screens */
    .help-sidebar      { left: 4px; top: auto; bottom: calc(60vh); }
    .developer-sidebar { left: 4px; top: auto; bottom: calc(45vh); }
    .network-sidebar   { left: 4px; top: auto; bottom: calc(30vh); }
    .learning-sidebar  { left: 70px; top: auto; bottom: calc(30vh); }
    .kg-sidebar        { left: 4px; top: auto; bottom: calc(15vh); }
    .personal-sidebar  { left: 70px; top: auto; bottom: calc(15vh); }
}