/* --- BARRA LATERAL (SIDEBAR) --- */
#sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    padding: 20px 45px 20px 20px;
    box-sizing: border-box;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    z-index: 10;
    color: var(--text-main);
    margin-left: 0;
    flex-shrink: 0;
    transition: margin-left 0.3s ease;
}

#sidebar.closed>* {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s;
}

#sidebar::-webkit-scrollbar {
    width: 8px;
}

#sidebar::-webkit-scrollbar-track {
    background: transparent;
}

#sidebar::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

html.dark-mode #sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
}

#sidebar.closed {
    margin-left: calc(var(--sidebar-width) * -1);
}

#sidebar h3 {
    margin: 0 0 10px 0;
    color: var(--secondary);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    font-weight: 700;
}

/* Menu Toggles & Accordion */
.menu-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 10px 10px 10px 0;
    text-align: left;
    transition: all 0.2s ease;
    border-radius: 8px;
    /* Unified radius */
}

.menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.03);
    padding-left: 8px;
    /* Subtle movement */
    color: var(--primary);
}

/* Accordion Specifics (cleaner override) */
.menu-toggle {
    margin: 0;
    padding: 8px 10px;
    /* Better padding */
}

.menu-toggle:hover {
    background-color: rgba(0, 0, 0, 0.08);
    transform: translateX(5px);
}

html.dark-mode .menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.06);
}

.menu-toggle.active {
    background-color: rgba(0, 0, 0, 0.05);
    font-weight: bold;
    color: var(--primary);
}

html.dark-mode .menu-toggle.active {
    background-color: rgba(56, 189, 248, 0.5) !important;
    color: #ffffff !important;
    border-left: 4px solid #38bdf8 !important;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
}

.menu-toggle:hover h3 {
    color: var(--primary);
}

.menu-toggle h3 {
    border-bottom: none;
    margin-bottom: 0;
}

.arrow-icon {
    transition: transform 0.3s;
    color: #888;
}

.menu-toggle.active .arrow-icon {
    transform: rotate(180deg);
}

/* Submenu */
.submenu {
    max-height: 1500px;
    overflow: visible;
    transition: max-height 0.4s ease-in-out, opacity 0.4s ease-in-out, margin-top 0.4s ease, overflow 0s 0.4s;
    opacity: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 10px;
    padding-left: 15px;
    border-left: 2px solid var(--border-color);
}

.submenu .submenu {
    border-left: 1px dashed var(--border-color);
    margin-top: 5px;
    gap: 8px;
}

.submenu .menu-toggle h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.submenu.collapsed {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    pointer-events: none;
    display: none !important;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), opacity 0.3s, margin-top 0.3s, overflow 0s 0s;
}

#sidebar.closed .submenu {
    visibility: hidden;
    transition: none;
}

.control-group {
    display: flex;
    flex-direction: column;
    min-width: 200px;
    margin: 0;
}

h4 {
    margin: 10px 0 5px 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.submenu .control-group {
    gap: 8px;
    margin-bottom: 15px;
}

.submenu .control-group:last-child {
    margin-bottom: 0;
}

/* Sidebar Toggle Button */
#sidebar-toggle {
    position: absolute;
    left: calc(var(--sidebar-width));
    transform: translateY(-50%);
    top: 50%;
    z-index: 900;
    background: var(--accent-color);
    border: 2px solid var(--border-color);
    border-left: none;
    padding: 15px 5px;
    border-radius: 0 10px 10px 0;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    font-weight: bold;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: left 0.3s ease, background 0.2s, color 0.2s;
    outline: none;
    width: 30px;
    height: 60px;
}

#sidebar-toggle:hover {
    color: var(--primary);
    background: var(--bg-color);
}

#sidebar-toggle span {
    display: block;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#sidebar.closed+#sidebar-toggle {
    left: 0;
}

#sidebar.closed+#sidebar-toggle span {
    transform: rotate(180deg);
}

/* Auth Controls in Sidebar */
#auth-controls-sidebar {
    padding: 20px;
    background: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

#auth-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: stretch;
    text-align: center;
}

#auth-btn,
#logout-btn {
    padding: 10px 18px;
    border-radius: 15px;
    border: none;
    background: var(--accent-color);
    color: white;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s, background 0.3s;
}

#auth-btn:hover,
#logout-btn:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
}

#user-display {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
    word-break: break-all;
}

/* Responsive Sidebar */
@media (max-width: 768px) {
    #sidebar {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        width: 80%;
        max-width: 300px;
    }

    #sidebar.closed {
        transform: translateX(-100%);
        margin-left: 0;
    }

    #sidebar-toggle {
        left: 80%;
        top: 20px;
    }

    #sidebar.closed+#sidebar-toggle {
        left: 0;
        background: rgba(255, 255, 255, 0.8);
        border: 1px solid #ddd;
        border-radius: 0 10px 10px 0;
    }
}