/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE SIDEBAR — css/responsive/responsive-sidebar.css
   ═══════════════════════════════════════════════════════════════════
   Purpose: Complete responsive sidebar system with:
   - Desktop expanded state (272px)
   - Desktop collapsed state (80px)
   - Mobile overlay state (full width slide-in)
   - Smooth transitions and animations
   - Touch-friendly interactions
   No pure white (#FFFFFF), no pure black (#000000).
   ═══════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR BASE — Shared styles
   ═══════════════════════════════════════════════════════════════════ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-w, 272px);
    background: var(--sidebar-bg, #fcfaf8);
    border-right: 1px solid var(--sidebar-border, #e8e0d8);
    display: flex;
    flex-direction: column;
    z-index: var(--z-high, 200);
    transition: width var(--transition, 0.3s cubic-bezier(0.22, 1, 0.36, 1)),
        transform var(--transition, 0.3s cubic-bezier(0.22, 1, 0.36, 1)),
        box-shadow var(--transition, 0.3s cubic-bezier(0.22, 1, 0.36, 1));
    overflow: hidden;
    box-shadow: 4px 0 40px rgba(26, 20, 16, 0.04);
    will-change: transform, width;
}

[data-theme="dark"] .sidebar {
    background: var(--sidebar-bg, #1a1410);
    border-right-color: var(--sidebar-border, rgba(240, 235, 230, 0.06));
    box-shadow: 4px 0 40px rgba(0, 0, 0, 0.25);
}

/* ── Sidebar glow edge ── */
.sidebar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg,
            transparent 0%,
            rgba(45, 31, 58, 0.15) 30%,
            rgba(122, 90, 122, 0.15) 60%,
            transparent 100%);
    pointer-events: none;
    transition: opacity var(--transition, 0.3s cubic-bezier(0.22, 1, 0.36, 1));
}

[data-theme="dark"] .sidebar::after {
    background: linear-gradient(180deg,
            transparent 0%,
            rgba(77, 47, 74, 0.20) 30%,
            rgba(154, 122, 154, 0.20) 60%,
            transparent 100%);
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — DESKTOP EXPANDED STATE
   ═══════════════════════════════════════════════════════════════════ */

@media (min-width: 1025px) {
    .sidebar {
        width: var(--sidebar-w, 272px);
    }

    /* ── Show full labels ── */
    .sidebar .sidebar-school-name,
    .sidebar .nav-item span:not(.nav-icon),
    .sidebar .sidebar-user-info,
    .sidebar .nav-section-title span:first-child,
    .sidebar .nav-section-title .nav-section-arrow {
        display: inline-block;
    }

    .sidebar .nav-item {
        justify-content: flex-start;
        padding: var(--sm, 8px) var(--md, 16px);
        gap: var(--sm, 8px);
    }

    .sidebar .nav-section-title {
        justify-content: space-between;
        padding: var(--sm, 8px) var(--md, 16px) var(--xs, 4px);
    }

    .sidebar .sidebar-footer {
        justify-content: flex-start;
        padding: var(--md, 16px);
    }

    .sidebar .sidebar-user-info {
        display: block;
    }

    .sidebar .sidebar-logout {
        margin-left: auto;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — DESKTOP COLLAPSED STATE
   ═══════════════════════════════════════════════════════════════════ */

@media (min-width: 1025px) {
    .sidebar.collapsed {
        width: var(--sidebar-w-collapsed, 80px);
    }

    /* ── Hide labels ── */
    .sidebar.collapsed .sidebar-school-name,
    .sidebar.collapsed .nav-item span:not(.nav-icon),
    .sidebar.collapsed .sidebar-user-info,
    .sidebar.collapsed .nav-section-title span:first-child,
    .sidebar.collapsed .nav-section-title .nav-section-arrow {
        display: none;
    }

    /* ── Center icons ── */
    .sidebar.collapsed .nav-item {
        justify-content: center;
        padding: var(--sm, 8px);
        gap: 0;
    }

    .sidebar.collapsed .nav-item .nav-icon {
        font-size: 1.3rem;
    }

    /* ── Center section titles ── */
    .sidebar.collapsed .nav-section-title {
        justify-content: center;
        padding: var(--sm, 8px) 0;
    }

    /* ── Center footer ── */
    .sidebar.collapsed .sidebar-footer {
        justify-content: center;
        padding: var(--md, 16px) var(--sm, 8px);
        flex-direction: column;
        gap: var(--sm, 8px);
    }

    .sidebar.collapsed .sidebar-user-avatar {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .sidebar.collapsed .sidebar-logout {
        margin-left: 0;
    }

    /* ── Hide children in collapsed state ── */
    .sidebar.collapsed .nav-children {
        display: none !important;
    }

    /* ── Collapse toggle button ── */
    .sidebar.collapsed .sidebar-collapse-btn {
        transform: rotate(180deg);
    }

    /* ── Hover to expand temporarily ── */
    .sidebar.collapsed:hover {
        width: var(--sidebar-w, 272px);
        box-shadow: 8px 0 60px rgba(26, 20, 16, 0.08);
    }

    [data-theme="dark"] .sidebar.collapsed:hover {
        box-shadow: 8px 0 60px rgba(0, 0, 0, 0.30);
    }

    .sidebar.collapsed:hover .sidebar-school-name,
    .sidebar.collapsed:hover .nav-item span:not(.nav-icon),
    .sidebar.collapsed:hover .sidebar-user-info,
    .sidebar.collapsed:hover .nav-section-title span:first-child,
    .sidebar.collapsed:hover .nav-section-title .nav-section-arrow {
        display: inline-block;
    }

    .sidebar.collapsed:hover .nav-item {
        justify-content: flex-start;
        padding: var(--sm, 8px) var(--md, 16px);
        gap: var(--sm, 8px);
    }

    .sidebar.collapsed:hover .nav-item .nav-icon {
        font-size: 1.1rem;
    }

    .sidebar.collapsed:hover .nav-section-title {
        justify-content: space-between;
        padding: var(--sm, 8px) var(--md, 16px) var(--xs, 4px);
    }

    .sidebar.collapsed:hover .sidebar-footer {
        justify-content: flex-start;
        padding: var(--md, 16px);
        flex-direction: row;
    }

    .sidebar.collapsed:hover .sidebar-user-avatar {
        width: 34px;
        height: 34px;
        font-size: 12px;
    }

    .sidebar.collapsed:hover .sidebar-logout {
        margin-left: auto;
    }

    .sidebar.collapsed:hover .nav-children {
        display: block !important;
    }

    .sidebar.collapsed:hover .sidebar-collapse-btn {
        transform: rotate(0deg);
    }

    /* ── Collapse button styling ── */
    .sidebar-collapse-btn {
        position: absolute;
        bottom: 80px;
        right: -14px;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: var(--bg-card, #fcfaf8);
        border: 1px solid var(--border-light, #e8e0d8);
        color: var(--text-muted, #a8988e);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition, 0.3s cubic-bezier(0.22, 1, 0.36, 1));
        box-shadow: var(--shadow-sm, 0 1px 2px rgba(26, 20, 16, 0.05));
        font-size: 12px;
        z-index: 10;
        touch-action: manipulation;
    }

    [data-theme="dark"] .sidebar-collapse-btn {
        background: var(--bg-card, #241d18);
        border-color: rgba(240, 235, 230, 0.06);
        color: var(--text-muted, #6b5f56);
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.20);
    }

    .sidebar-collapse-btn:hover {
        background: var(--bg-hover, #f5f0eb);
        border-color: var(--role-primary, #2d1f3a);
        color: var(--role-primary, #2d1f3a);
        transform: scale(1.05);
    }

    [data-theme="dark"] .sidebar-collapse-btn:hover {
        background: rgba(240, 235, 230, 0.04);
        border-color: var(--role-primary, #4d2f4a);
        color: var(--role-primary, #4d2f4a);
    }

    .sidebar-collapse-btn:active {
        transform: scale(0.90);
    }

    .sidebar.collapsed .sidebar-collapse-btn {
        right: -14px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — TABLET (769px - 1024px)
   ═══════════════════════════════════════════════════════════════════ */

@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }

    .sidebar .sidebar-school-name {
        font-size: 0.8rem;
    }

    .sidebar .nav-item {
        font-size: 0.8rem;
        padding: var(--sm, 8px) var(--md, 12px);
    }

    .sidebar .nav-item .nav-icon {
        font-size: 1rem;
    }

    .sidebar .sidebar-user-name {
        font-size: 0.75rem;
    }

    .sidebar .sidebar-user-role {
        font-size: 0.65rem;
    }

    .sidebar .sidebar-header {
        padding: var(--md, 12px);
    }

    .sidebar .sidebar-footer {
        padding: var(--sm, 8px) var(--md, 12px);
    }

    .sidebar .nav-section-title {
        font-size: 0.6rem;
        padding: var(--sm, 8px) var(--md, 12px) var(--xs, 4px);
    }

    .sidebar .nav-child {
        font-size: 0.75rem;
        padding: 4px 8px 4px 16px;
    }

    .sidebar .nav-children {
        margin-left: 16px;
        padding-left: 8px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — MOBILE OVERLAY (max-width: 768px)
   ═══════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-w, 272px);
        border-radius: 0 20px 20px 0;
        box-shadow: none;
        transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1),
            box-shadow 0.38s cubic-bezier(0.22, 1, 0.36, 1);
    }

    [data-theme="dark"] .sidebar {
        box-shadow: none;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: 8px 0 60px rgba(26, 20, 16, 0.15);
    }

    [data-theme="dark"] .sidebar.mobile-open {
        box-shadow: 8px 0 60px rgba(0, 0, 0, 0.40);
    }

    /* ── Sidebar overlay ── */
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(26, 20, 16, 0);
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
        z-index: calc(var(--z-high, 200) - 1);
        display: none;
        opacity: 0;
        transition: opacity 0.38s cubic-bezier(0.22, 1, 0.36, 1),
            backdrop-filter 0.38s cubic-bezier(0.22, 1, 0.36, 1),
            background 0.38s cubic-bezier(0.22, 1, 0.36, 1);
        pointer-events: none;
        will-change: opacity;
    }

    .sidebar-overlay.active {
        display: block;
        opacity: 1;
        background: rgba(26, 20, 16, 0.45);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        pointer-events: auto;
    }

    [data-theme="dark"] .sidebar-overlay.active {
        background: rgba(10, 8, 6, 0.55);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    /* ── Hamburger button (shown on mobile) ── */
    .hamburger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: var(--r-md, 10px);
        border: 1px solid var(--border-light, #e8e0d8);
        background: var(--bg-card, #fcfaf8);
        color: var(--text-soft, #6b5f56);
        cursor: pointer;
        transition: all var(--transition-fast, 0.15s ease);
        touch-action: manipulation;
        font-size: 18px;
    }

    [data-theme="dark"] .hamburger-btn {
        background: var(--bg-card, #241d18);
        border-color: rgba(240, 235, 230, 0.06);
        color: var(--text-soft, #9a8e86);
    }

    .hamburger-btn:hover {
        background: var(--bg-hover, #f5f0eb);
        border-color: var(--border-medium, #d4c8be);
    }

    [data-theme="dark"] .hamburger-btn:hover {
        background: rgba(240, 235, 230, 0.04);
        border-color: rgba(240, 235, 230, 0.10);
    }

    .hamburger-btn:active {
        transform: scale(0.92);
        opacity: 0.7;
    }

    .hamburger-btn .hamburger-icon {
        display: flex;
        flex-direction: column;
        gap: 4px;
        width: 20px;
        height: 16px;
        position: relative;
    }

    .hamburger-btn .hamburger-icon span {
        display: block;
        height: 2px;
        border-radius: 2px;
        background: var(--text-soft, #6b5f56);
        transition: all 0.3s ease;
        transform-origin: center;
    }

    [data-theme="dark"] .hamburger-btn .hamburger-icon span {
        background: var(--text-soft, #9a8e86);
    }

    .hamburger-btn .hamburger-icon span:nth-child(1) {
        width: 100%;
    }

    .hamburger-btn .hamburger-icon span:nth-child(2) {
        width: 80%;
    }

    .hamburger-btn .hamburger-icon span:nth-child(3) {
        width: 60%;
    }

    .hamburger-btn:hover .hamburger-icon span {
        background: var(--text-body, #2c241e);
    }

    [data-theme="dark"] .hamburger-btn:hover .hamburger-icon span {
        background: var(--text-body, #d4ccc6);
    }

    /* ── Hamburger → X animation when sidebar is open ── */
    .hamburger-btn.open .hamburger-icon span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
        width: 100%;
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(2) {
        opacity: 0;
        width: 0;
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
        width: 100%;
    }

    /* ── Sidebar header adjustments ── */
    .sidebar .sidebar-header {
        padding: var(--md, 16px) var(--md, 14px);
    }

    .sidebar .sidebar-nav {
        padding: 4px 6px 12px;
    }

    .sidebar .nav-section-title {
        padding: var(--sm, 8px) var(--sm, 8px) var(--xs, 4px);
        font-size: 0.6rem;
    }

    .sidebar .nav-item {
        padding: var(--sm, 8px) var(--sm, 8px);
        font-size: 0.8rem;
        gap: var(--sm, 8px);
    }

    .sidebar .nav-item .nav-icon {
        font-size: 1rem;
    }

    .sidebar .nav-child {
        font-size: 0.75rem;
        padding: 4px 8px 4px 12px;
    }

    .sidebar .nav-children {
        margin-left: 16px;
        padding-left: 6px;
    }

    .sidebar .sidebar-footer {
        padding: var(--sm, 8px) var(--md, 12px);
    }

    .sidebar .sidebar-user-name {
        font-size: 0.75rem;
    }

    .sidebar .sidebar-user-role {
        font-size: 0.65rem;
    }

    /* ── Hide collapse button on mobile ── */
    .sidebar .sidebar-collapse-btn {
        display: none;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — SMALL MOBILE (max-width: 480px)
   ═══════════════════════════════════════════════════════════════════ */

@media (max-width: 480px) {
    .sidebar {
        width: 260px;
    }

    .sidebar .sidebar-header {
        padding: var(--sm, 8px) var(--md, 12px);
    }

    .sidebar .sidebar-logo {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    .sidebar .sidebar-school-name {
        font-size: 0.75rem;
    }

    .sidebar .sidebar-school-name small {
        font-size: 0.6rem;
    }

    .sidebar .sidebar-nav {
        padding: 2px 4px 8px;
    }

    .sidebar .nav-item {
        padding: 6px 8px;
        font-size: 0.75rem;
        min-height: 40px;
    }

    .sidebar .nav-item .nav-icon {
        font-size: 0.9rem;
    }

    .sidebar .nav-section-title {
        font-size: 0.55rem;
        padding: 4px 8px 2px;
    }

    .sidebar .nav-child {
        font-size: 0.7rem;
        padding: 4px 6px 4px 10px;
        min-height: 36px;
    }

    .sidebar .nav-children {
        margin-left: 12px;
        padding-left: 4px;
    }

    .sidebar .nav-group-header {
        padding: 6px 8px;
        font-size: 0.75rem;
        min-height: 40px;
    }

    .sidebar .nav-group-header svg {
        width: 16px;
        height: 16px;
    }

    .sidebar .sidebar-footer {
        padding: 6px 10px;
        gap: 6px;
    }

    .sidebar .sidebar-user-avatar {
        width: 28px;
        height: 28px;
        font-size: 10px;
    }

    .sidebar .sidebar-user-name {
        font-size: 0.7rem;
    }

    .sidebar .sidebar-user-role {
        font-size: 0.6rem;
    }

    .sidebar .sidebar-logout {
        font-size: 0.9rem;
        width: 28px;
        height: 28px;
    }

    .sidebar .badge-pill {
        font-size: 9px;
        padding: 3px 8px;
        min-height: 28px;
    }

    .sidebar .badge-pill .dot {
        width: 5px;
        height: 5px;
    }

    .sidebar-overlay.active {
        background: rgba(26, 20, 16, 0.50);
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }

    [data-theme="dark"] .sidebar-overlay.active {
        background: rgba(10, 8, 6, 0.60);
    }

    .hamburger-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .hamburger-btn .hamburger-icon {
        width: 18px;
        height: 14px;
        gap: 3px;
    }

    .hamburger-btn .hamburger-icon span {
        height: 1.5px;
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(1) {
        transform: translateY(5px) rotate(45deg);
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(3) {
        transform: translateY(-5px) rotate(-45deg);
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — VERY SMALL MOBILE (max-width: 380px)
   ═══════════════════════════════════════════════════════════════════ */

@media (max-width: 380px) {
    .sidebar {
        width: 240px;
    }

    .sidebar .sidebar-header {
        padding: 6px 10px;
    }

    .sidebar .sidebar-logo {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }

    .sidebar .sidebar-school-name {
        font-size: 0.7rem;
    }

    .sidebar .sidebar-school-name small {
        font-size: 0.55rem;
    }

    .sidebar .nav-item {
        padding: 4px 6px;
        font-size: 0.7rem;
        min-height: 36px;
    }

    .sidebar .nav-item .nav-icon {
        font-size: 0.8rem;
    }

    .sidebar .nav-section-title {
        font-size: 0.5rem;
        padding: 4px 6px 2px;
    }

    .sidebar .nav-child {
        font-size: 0.65rem;
        padding: 3px 4px 3px 8px;
        min-height: 32px;
    }

    .sidebar .nav-children {
        margin-left: 10px;
        padding-left: 4px;
    }

    .sidebar .nav-group-header {
        padding: 4px 6px;
        font-size: 0.7rem;
        min-height: 36px;
    }

    .sidebar .nav-group-header svg {
        width: 14px;
        height: 14px;
    }

    .sidebar .sidebar-footer {
        padding: 4px 8px;
        gap: 4px;
    }

    .sidebar .sidebar-user-avatar {
        width: 24px;
        height: 24px;
        font-size: 9px;
    }

    .sidebar .sidebar-user-name {
        font-size: 0.65rem;
    }

    .sidebar .sidebar-user-role {
        font-size: 0.55rem;
    }

    .sidebar .sidebar-logout {
        font-size: 0.8rem;
        width: 24px;
        height: 24px;
    }

    .sidebar .badge-pill {
        font-size: 8px;
        padding: 2px 6px;
        min-height: 24px;
    }

    .hamburger-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .hamburger-btn .hamburger-icon {
        width: 16px;
        height: 12px;
        gap: 2.5px;
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(1) {
        transform: translateY(4.5px) rotate(45deg);
    }

    .hamburger-btn.open .hamburger-icon span:nth-child(3) {
        transform: translateY(-4.5px) rotate(-45deg);
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — TOUCH OPTIMIZATIONS (pointer: coarse)
   ═══════════════════════════════════════════════════════════════════ */

@media (pointer: coarse) {

    .sidebar .nav-item,
    .sidebar .nav-group-header,
    .sidebar .nav-child,
    .sidebar .badge-pill,
    .sidebar .sidebar-logout,
    .hamburger-btn {
        min-height: 44px;
        min-width: 44px;
    }

    .sidebar .nav-child {
        min-height: 40px;
    }

    .sidebar .nav-item:active,
    .sidebar .nav-group-header:active,
    .sidebar .nav-child:active {
        opacity: 0.6;
        transition: opacity 0.05s;
    }

    /* ── Remove hover effects on touch ── */
    .sidebar .nav-item:hover,
    .sidebar .nav-group-header:hover,
    .sidebar .nav-child:hover,
    .sidebar .badge-pill:hover,
    .hamburger-btn:hover {
        transform: none !important;
    }

    /* ── Larger touch targets for collapse button ── */
    .sidebar-collapse-btn {
        min-width: 36px;
        min-height: 36px;
        width: 36px;
        height: 36px;
        right: -18px;
        bottom: 80px;
        font-size: 14px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — PRINT STYLES
   ═══════════════════════════════════════════════════════════════════ */

@media print {

    .sidebar,
    .sidebar-overlay,
    .hamburger-btn {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR — REDUCED MOTION
   ═══════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {

    .sidebar,
    .sidebar-overlay,
    .hamburger-btn .hamburger-icon span,
    .sidebar-collapse-btn {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .sidebar.mobile-open {
        transition-duration: 0.01ms !important;
    }

    .sidebar-overlay.active {
        transition-duration: 0.01ms !important;
    }

    .hamburger-btn.open .hamburger-icon span {
        transition-duration: 0.01ms !important;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   DARK THEME — ADDITIONAL OVERRIDES
   ═══════════════════════════════════════════════════════════════════ */

[data-theme="dark"] {
    @media (pointer: coarse) {

        .sidebar .nav-item:active,
        .sidebar .nav-group-header:active,
        .sidebar .nav-child:active {
            opacity: 0.5;
        }

        .sidebar-collapse-btn {
            background: var(--bg-card, #241d18);
            border-color: rgba(240, 235, 230, 0.06);
            color: var(--text-muted, #6b5f56);
        }

        .sidebar-collapse-btn:active {
            opacity: 0.6;
            transform: scale(0.90);
        }
    }
}