/* ========== SIDEBAR NAVIGATION ========== */

:root {
    --sidebar-width: 240px;
    --sidebar-collapsed-width: 64px;
    --sidebar-bg: #0a0a0a;
    --sidebar-border: #1f1f1f;
    --sidebar-item-hover: rgba(233, 86, 30, 0.08);
    --sidebar-item-active: rgba(233, 86, 30, 0.12);
    --sidebar-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar container */
.nexo-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    z-index: 40;
    display: flex;
    flex-direction: column;
    transition: width var(--sidebar-transition);
    overflow: hidden;
}

/* Logo area */
.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--sidebar-border);
    min-height: 64px;
    flex-shrink: 0;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 0.5rem;
    object-fit: contain;
}

.sidebar-brand {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--beige);
    letter-spacing: -0.01em;
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem;
}

.sidebar-section {
    margin-bottom: 0.25rem;
}

.sidebar-section-label {
    padding: 0.5rem 0.75rem 0.25rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4a4a4a;
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar-divider {
    height: 1px;
    background: var(--sidebar-border);
    margin: 0.5rem 0.75rem;
}

/* Nav items */
.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.5rem;
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
    transition: all 0.15s ease;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    position: relative;
}

.sidebar-item:hover {
    background: var(--sidebar-item-hover);
    color: var(--beige);
}

.sidebar-item.active {
    background: var(--sidebar-item-active);
    color: var(--orange);
}

.sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--orange);
    border-radius: 0 2px 2px 0;
}

.sidebar-item-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke-width: 1.75;
}

.sidebar-item-label {
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

/* Footer (logout + collapse toggle) */
.sidebar-footer {
    border-top: 1px solid var(--sidebar-border);
    padding: 0.5rem;
    flex-shrink: 0;
}

.sidebar-item.logout-item:hover {
    background: rgba(239, 68, 68, 0.08);
    color: #f87171;
}

/* Collapse toggle button */
.sidebar-collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    color: #6b7280;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    transition: all 0.15s ease;
}

.sidebar-collapse-btn:hover {
    background: rgba(255, 255, 255, 0.04);
    color: #9ca3af;
}

.sidebar-collapse-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    transition: transform var(--sidebar-transition);
}

.sidebar-collapse-label {
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

/* ========== COLLAPSED STATE ========== */

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

.nexo-sidebar.collapsed .sidebar-brand,
.nexo-sidebar.collapsed .sidebar-section-label,
.nexo-sidebar.collapsed .sidebar-item-label,
.nexo-sidebar.collapsed .sidebar-collapse-label {
    opacity: 0;
    pointer-events: none;
}

.nexo-sidebar.collapsed .sidebar-collapse-icon {
    transform: rotate(180deg);
}

.nexo-sidebar.collapsed .sidebar-item {
    justify-content: center;
    padding: 0.625rem;
}

.nexo-sidebar.collapsed .sidebar-item.active::before {
    left: 0;
}

.nexo-sidebar.collapsed .sidebar-collapse-btn {
    justify-content: center;
    padding: 0.5rem;
}

.nexo-sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 1.25rem 0.75rem;
}

/* Tooltip on collapsed hover */
.nexo-sidebar.collapsed .sidebar-item[data-tooltip] {
    position: relative;
}

.nexo-sidebar.collapsed .sidebar-item[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(var(--sidebar-collapsed-width) - 4px);
    top: 50%;
    transform: translateY(-50%);
    background: #1a1a1a;
    color: var(--beige);
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 50;
    border: 1px solid var(--sidebar-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    pointer-events: none;
}

/* ========== MAIN CONTENT SHIFT ========== */

body.has-sidebar>main,
body.has-sidebar>#app-content {
    margin-left: var(--sidebar-width);
    transition: margin-left var(--sidebar-transition);
}

body.has-sidebar.sidebar-collapsed>main,
body.has-sidebar.sidebar-collapsed>#app-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* ========== MOBILE HAMBURGER ========== */

.sidebar-hamburger {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 50;
    width: 40px;
    height: 40px;
    border-radius: 0.5rem;
    background: #121212;
    border: 1px solid var(--sidebar-border);
    color: var(--beige);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.sidebar-hamburger:hover {
    background: #1a1a1a;
    border-color: var(--orange);
}

.sidebar-hamburger svg {
    width: 20px;
    height: 20px;
}

/* Mobile overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 39;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.visible {
    opacity: 1;
}

/* ========== RESPONSIVE ========== */

@media (max-width: 768px) {
    .sidebar-hamburger {
        display: flex;
    }

    .nexo-sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        box-shadow: none;
    }

    .nexo-sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
    }

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

    .nexo-sidebar.collapsed .sidebar-brand,
    .nexo-sidebar.collapsed .sidebar-section-label,
    .nexo-sidebar.collapsed .sidebar-item-label,
    .nexo-sidebar.collapsed .sidebar-collapse-label {
        opacity: 1;
        pointer-events: auto;
    }

    .nexo-sidebar.collapsed .sidebar-item {
        justify-content: flex-start;
        padding: 0.625rem 0.75rem;
    }

    .nexo-sidebar.collapsed .sidebar-collapse-icon {
        transform: none;
    }

    .nexo-sidebar.collapsed .sidebar-collapse-btn {
        justify-content: flex-start;
        padding: 0.5rem 0.75rem;
    }

    .nexo-sidebar.collapsed .sidebar-header {
        justify-content: flex-start;
        padding: 1.25rem 1rem;
    }

    body.has-sidebar>main,
    body.has-sidebar>#app-content {
        margin-left: 0;
    }

    body.has-sidebar.sidebar-collapsed>main,
    body.has-sidebar.sidebar-collapsed>#app-content {
        margin-left: 0;
    }

    /* Adjust main padding for hamburger button */
    body.has-sidebar>main,
    body.has-sidebar>#app-content {
        padding-top: 4.5rem;
    }
}