/* ============================================
   App Sidebar - Collapsible Navigation
   Desktop: click toggle expand/collapse
   Mobile:  overlay slide-in from left
   ============================================ */

:root {
    --sb-expanded: 256px;
    --sb-collapsed: 68px;
    --sb-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================
   BASE SIDEBAR
   ============================================= */
#appSidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--sb-expanded);
    z-index: 1000;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-direction: column;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    background: linear-gradient(180deg, var(--sb-grad1, #7c3aed) 0%, var(--sb-grad2, #ec4899) 100%);
    color: #fff;
    -webkit-transition: width 0.3s var(--sb-ease);
    transition: width 0.3s var(--sb-ease);
    box-shadow: 2px 0 15px rgba(0,0,0,0.08);
    font-family: 'Prompt', sans-serif;
}

#appSidebar::-webkit-scrollbar { width: 3px; }
#appSidebar::-webkit-scrollbar-track { background: transparent; }
#appSidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 3px; }

/* =============================================
   TOGGLE BUTTON ROW (Desktop)
   ============================================= */
.sb-toggle-row {
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: flex-end;
    justify-content: flex-end;
    padding: 12px 12px 0;
}

.sb-toggle-btn {
    display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    -webkit-justify-content: center;
    justify-content: center;
    width: 30px; height: 30px;
    border-radius: 8px;
    border: 1.5px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    font-size: 13px;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
    flex-shrink: 0;
}

.sb-toggle-btn:hover {
    background: rgba(255,255,255,0.18);
    color: #fff;
    border-color: rgba(255,255,255,0.45);
}

.sb-toggle-icon {
    -webkit-transition: transform 0.3s ease;
    transition: transform 0.3s ease;
}

/* =============================================
   HEADER (Logo, Title, Year)
   ============================================= */
.sb-header {
    text-align: center;
    padding: 8px 15px 16px;
    -webkit-transition: padding 0.3s ease;
    transition: padding 0.3s ease;
}

.sb-logo {
    width: 65px; height: 65px;
    background: #fff;
    border-radius: 50%;
    margin: 0 auto 10px;
    display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    -webkit-justify-content: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    overflow: hidden;
    -webkit-transition: width 0.3s ease, height 0.3s ease, margin 0.3s ease;
    transition: width 0.3s ease, height 0.3s ease, margin 0.3s ease;
}

.sb-logo img {
    width: 100%; height: 100%;
    object-fit: contain;
    border-radius: 50%;
}

.sb-logo i {
    color: var(--sb-grad1, #7c3aed);
    font-size: 28px;
}

.sb-title {
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 2px;
}

.sb-user {
    font-size: 11px;
    opacity: 0.86;
    margin-top: 4px;
    line-height: 1.4;
}

.sb-year {
    font-size: 11px;
    opacity: 0.8;
}

/* =============================================
   TEXT ELEMENTS (hide/show on collapse)
   ============================================= */
.sb-text {
    -webkit-transition: opacity 0.25s ease, max-width 0.3s ease;
    transition: opacity 0.25s ease, max-width 0.3s ease;
    overflow: hidden;
    white-space: nowrap;
    display: inline-block;
}

/* =============================================
   NAVIGATION
   ============================================= */
.sb-nav {
    -webkit-flex: 1;
    flex: 1;
    padding: 6px 0;
}

.sb-nav-item {
    display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    padding: 11px 24px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 14px;
    font-family: inherit;
    -webkit-transition: color 0.2s, background 0.2s;
    transition: color 0.2s, background 0.2s;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
}

.sb-nav-item:hover {
    color: #fff;
    background: rgba(255,255,255,0.12);
}

.sb-nav-item.sb-active {
    color: #fff;
    background: rgba(255,255,255,0.2);
    font-weight: 500;
    border-right: 3px solid rgba(255,255,255,0.8);
}

.sb-nav-item > i:first-child {
    width: 20px;
    min-width: 20px;
    text-align: center;
    font-size: 16px;
    margin-right: 14px;
    flex-shrink: 0;
}

.sb-nav-logout {
    opacity: 0.75;
}
.sb-nav-logout:hover {
    opacity: 1;
}

/* =============================================
   SETTINGS DROPDOWN
   ============================================= */
.sb-dropdown-arrow {
    margin-left: auto;
    font-size: 11px;
    -webkit-transition: transform 0.3s ease;
    transition: transform 0.3s ease;
}

.sb-dropdown-open .sb-dropdown-arrow {
    -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
}

/* Submenu */
.sb-submenu {
    max-height: 0;
    overflow: hidden;
    -webkit-transition: max-height 0.35s ease;
    transition: max-height 0.35s ease;
    background: rgba(0,0,0,0.12);
    border-radius: 0;
}

.sb-submenu.sb-submenu-open {
    max-height: 260px;
}

.sb-sub-item {
    display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    padding: 9px 24px 9px 52px;
    color: rgba(255,255,255,0.65);
    text-decoration: none;
    font-size: 13px;
    -webkit-transition: color 0.2s, background 0.2s;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
    overflow: hidden;
}

.sb-sub-item:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sb-sub-item.sb-active {
    color: #fff;
    background: rgba(255,255,255,0.15);
    font-weight: 500;
}

.sb-sub-item i {
    width: 16px;
    min-width: 16px;
    font-size: 12px;
    margin-right: 10px;
    text-align: center;
    flex-shrink: 0;
}

/* =============================================
   DIVIDER
   ============================================= */
.sb-divider {
    height: 1px;
    background: rgba(255,255,255,0.12);
    margin: 10px 16px;
}

/* =============================================
   FOOTER
   ============================================= */
.sb-footer {
    padding: 15px;
    text-align: center;
    font-size: 10px;
    opacity: 0.6;
    -webkit-transition: opacity 0.3s ease, max-height 0.3s ease, padding 0.3s ease;
    transition: opacity 0.3s ease, max-height 0.3s ease, padding 0.3s ease;
    overflow: hidden;
}

.sb-footer p { margin: 0; }

/* =============================================
   DESKTOP: COLLAPSED STATE
   ============================================= */
@media (min-width: 1024px) {
    #appSidebar.sb-collapsed {
        width: var(--sb-collapsed);
    }

    /* Hide text when collapsed */
    #appSidebar.sb-collapsed .sb-text {
        opacity: 0;
        max-width: 0;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }

    /* Compact logo */
    #appSidebar.sb-collapsed .sb-logo {
        width: 38px;
        height: 38px;
        margin-bottom: 4px;
    }

    /* Compact header */
    #appSidebar.sb-collapsed .sb-header {
        padding: 6px 8px 8px;
    }

    /* Hide submenu when collapsed */
    #appSidebar.sb-collapsed .sb-submenu {
        max-height: 0 !important;
    }

    /* Center icon in nav items when collapsed */
    #appSidebar.sb-collapsed .sb-nav-item {
        padding-left: 24px;
        padding-right: 24px;
    }

    #appSidebar.sb-collapsed .sb-sub-item {
        padding-left: 24px;
    }

    /* Simplify active state when collapsed */
    #appSidebar.sb-collapsed .sb-nav-item.sb-active {
        border-right: none;
        background: rgba(255,255,255,0.25);
    }

    /* Hide footer */
    #appSidebar.sb-collapsed .sb-footer {
        opacity: 0;
        max-height: 0;
        padding: 0 15px;
    }

    /* Rotate toggle icon (arrow points right = "expand") */
    #appSidebar.sb-collapsed .sb-toggle-icon {
        -webkit-transform: rotate(180deg);
        transform: rotate(180deg);
    }

    /* Center toggle when collapsed */
    #appSidebar.sb-collapsed .sb-toggle-row {
        -webkit-justify-content: center;
        justify-content: center;
    }
}

/* =============================================
   DESKTOP: MAIN CONTENT MARGIN
   ============================================= */
@media (min-width: 1024px) {
    .main-content {
        margin-left: var(--sb-expanded) !important;
        -webkit-transition: margin-left 0.3s var(--sb-ease) !important;
        transition: margin-left 0.3s var(--sb-ease) !important;
    }

    body.sb-body-collapsed .main-content {
        margin-left: var(--sb-collapsed) !important;
    }
}

/* =============================================
   MOBILE: OVERLAY SIDEBAR
   ============================================= */
@media (max-width: 1023px) {
    #appSidebar {
        width: 280px !important;
        -webkit-transform: translateX(-100%);
        transform: translateX(-100%);
        -webkit-transition: transform 0.3s var(--sb-ease), box-shadow 0.3s ease;
        transition: transform 0.3s var(--sb-ease), box-shadow 0.3s ease;
        box-shadow: none;
    }

    #appSidebar.sb-mobile-open {
        -webkit-transform: translateX(0);
        transform: translateX(0);
        box-shadow: 4px 0 30px rgba(0,0,0,0.25);
    }

    /* Always show text on mobile */
    #appSidebar .sb-text {
        opacity: 1 !important;
        max-width: none !important;
    }

    /* Hide desktop toggle on mobile */
    .sb-toggle-desktop {
        display: none !important;
    }

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

/* =============================================
   MOBILE: OVERLAY BACKDROP
   ============================================= */
#sbOverlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.45);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: opacity 0.3s ease;
    transition: opacity 0.3s ease;
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
}

#sbOverlay.sb-overlay-show {
    opacity: 1;
    pointer-events: auto;
}

/* =============================================
   MOBILE: HAMBURGER BUTTON
   ============================================= */
.sb-mobile-toggle {
    display: none;
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 998;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--sb-grad1, #7c3aed), var(--sb-grad2, #ec4899));
    color: white;
    font-size: 18px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    -webkit-align-items: center;
    align-items: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-transition: transform 0.2s ease, box-shadow 0.2s ease;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sb-mobile-toggle:hover {
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.sb-mobile-toggle:active {
    -webkit-transform: scale(0.95);
    transform: scale(0.95);
}

@media (max-width: 1023px) {
    .sb-mobile-toggle {
        display: -webkit-flex;
        display: flex;
    }

    /* Add top padding to main content for mobile hamburger */
    .main-content {
        padding-top: 65px !important;
    }
}

/* =============================================
   TOOLTIP for collapsed icons (desktop)
   ============================================= */
@media (min-width: 1024px) {
    #appSidebar.sb-collapsed .sb-nav-item {
        position: relative;
    }
    #appSidebar.sb-collapsed .sb-nav-item:hover::after {
        content: attr(data-tooltip);
        position: absolute;
        left: calc(var(--sb-collapsed) + 8px);
        top: 50%;
        -webkit-transform: translateY(-50%);
        transform: translateY(-50%);
        background: #1f2937;
        color: #fff;
        padding: 5px 12px;
        border-radius: 6px;
        font-size: 12px;
        font-weight: 500;
        white-space: nowrap;
        z-index: 1001;
        box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        pointer-events: none;
    }
    #appSidebar.sb-collapsed .sb-nav-item:hover::before {
        content: '';
        position: absolute;
        left: calc(var(--sb-collapsed) + 2px);
        top: 50%;
        -webkit-transform: translateY(-50%);
        transform: translateY(-50%);
        border: 5px solid transparent;
        border-right-color: #1f2937;
        z-index: 1001;
        pointer-events: none;
    }
}