/* Spec 008 — Sidebar (optitask-sidebar) */
:root {
    --sidebar-width: 250px;
    --sidebar-width-collapsed: 64px;
    --sidebar-bg: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%);
    --sidebar-text: rgba(255, 255, 255, 0.9);
    --sidebar-text-active: #fff;
    --sidebar-hover: rgba(255, 255, 255, 0.15);
    --sidebar-transition: 200ms ease;
    --sidebar-overlay-bg: rgba(0, 0, 0, 0.4);
}

.optitask-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--sidebar-transition);
    overflow: hidden;
}

.optitask-sidebar-collapsed {
    width: var(--sidebar-width-collapsed);
}

.optitask-sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: var(--sidebar-width);
}

.optitask-sidebar-collapsed .optitask-sidebar-inner {
    min-width: var(--sidebar-width-collapsed);
}

.optitask-sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    flex-shrink: 0;
    min-height: 52px;
}

.optitask-sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--sidebar-text);
    cursor: pointer;
    padding: 0.35rem;
    border-radius: 6px;
}

.optitask-sidebar-toggle:hover {
    background: var(--sidebar-hover);
}

.optitask-sidebar-toggle-icon {
    font-size: 1.25rem;
    display: block;
}

.optitask-sidebar-title {
    font-weight: 600;
    font-size: 1rem;
}

.optitask-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem 0.25rem;
}

/* Toggle en bas (spec 008 Phase 7) */
.optitask-sidebar-footer {
    flex-shrink: 0;
    padding: 0.5rem 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.optitask-sidebar-toggle-bottom {
    width: 100%;
    justify-content: center;
}
.optitask-sidebar-collapsed .optitask-sidebar-toggle-bottom .optitask-sidebar-toggle-icon {
    transform: rotate(-90deg);
}

.optitask-sidebar-loading {
    padding: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Group */
.optitask-sidebar-group-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    border-radius: 6px;
    transition: background var(--sidebar-transition);
}

.optitask-sidebar-group-header:hover {
    background: var(--sidebar-hover);
}

.optitask-sidebar-group-label {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 500;
}

.optitask-sidebar-group-chevron {
    font-size: 0.65rem;
    transition: transform var(--sidebar-transition);
}

.optitask-sidebar-group.is-expanded .optitask-sidebar-group-chevron {
    transform: rotate(0deg);
}

.optitask-sidebar-group:not(.is-expanded) .optitask-sidebar-group-chevron {
    transform: rotate(-90deg);
}

.optitask-sidebar-group-children {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--sidebar-transition);
}

.optitask-sidebar-group.is-expanded .optitask-sidebar-group-children {
    max-height: 2000px;
}

.optitask-sidebar-group-children .optitask-sidebar-item {
    padding-left: 2rem;
}

/* Item */
.optitask-sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: background var(--sidebar-transition), color var(--sidebar-transition);
}

.optitask-sidebar-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.optitask-sidebar-item.active,
.optitask-sidebar-item:active {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
    font-weight: 500;
}

.optitask-sidebar-item-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.optitask-sidebar-icon {
    flex-shrink: 0;
    width: 1.25rem;
    text-align: center;
    font-size: 1rem;
}

/* Badge */
.optitask-sidebar-badge {
    font-size: 0.7rem;
    font-weight: 600;
    min-width: 1.25rem;
    padding: 0.15rem 0.35rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.25);
}

/* Favoris (spec 008 T-008-44) */
.optitask-sidebar-favorites {
    padding: 0.25rem 0;
}
.optitask-sidebar-favorites-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.6);
    padding: 0.25rem 0.75rem;
    margin-bottom: 0.25rem;
}

/* Pin button on menu item */
.optitask-sidebar-pin {
    margin-left: auto;
    padding: 0.2rem;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    border-radius: 4px;
}
.optitask-sidebar-pin:hover {
    color: var(--sidebar-text-active);
    background: var(--sidebar-hover);
}
.optitask-sidebar-pin.is-pinned {
    color: #fbbf24;
}

/* Separator */
.optitask-sidebar-separator {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin: 0.5rem 0.75rem;
}

/* Collapsed: hide labels */
.optitask-sidebar-collapsed .optitask-sidebar-group-label,
.optitask-sidebar-collapsed .optitask-sidebar-group-chevron,
.optitask-sidebar-collapsed .optitask-sidebar-group-children,
.optitask-sidebar-collapsed .optitask-sidebar-item-label,
.optitask-sidebar-collapsed .optitask-sidebar-title,
.optitask-sidebar-collapsed .optitask-sidebar-badge {
    display: none !important;
}

.optitask-sidebar-collapsed .optitask-sidebar-group-header,
.optitask-sidebar-collapsed .optitask-sidebar-item {
    justify-content: center;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

/* Mobile drawer */
.optitask-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--sidebar-overlay-bg);
    z-index: 99;
}

@media (max-width: 767px) {
    .optitask-sidebar {
        transform: translateX(-100%);
        transition: transform var(--sidebar-transition);
        width: var(--sidebar-width);
    }

    .optitask-sidebar-mobile-open {
        transform: translateX(0);
    }

    .optitask-sidebar-mobile-open.optitask-sidebar-collapsed {
        width: var(--sidebar-width);
    }

    .optitask-sidebar-overlay {
        display: block;
    }

    .optitask-sidebar-mobile-open + .optitask-sidebar-overlay {
        display: block;
    }
}

@media (min-width: 768px) {
    .optitask-sidebar-overlay {
        display: none !important;
    }
}