/* =====================================================
   SMARTFUEL SIDEBAR NAVIGATION
   Sidebar laterale collassabile con supporto mobile
   ===================================================== */

/* Variabili CSS per la sidebar */
:root {
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --sidebar-bg: #1a1d23;
    --sidebar-header-bg: #151820;
    --sidebar-text: #a0aec0;
    --sidebar-text-hover: #e2e8f0;
    --sidebar-active-bg: #252932;
    --sidebar-active-border: #3b82f6;
    --sidebar-submenu-bg: rgba(0, 0, 0, 0.15);
    --sidebar-divider: rgba(255, 255, 255, 0.1);
    --sidebar-transition: 0.3s ease;
    --mobile-header-height: 56px;
}

/* Dark mode adjustments */
[data-theme="dark"] {
    --sidebar-bg: #0f1015;
    --sidebar-header-bg: #0a0b0e;
    --sidebar-active-bg: #1a1d23;
}

/* =====================================================
   SIDEBAR CONTAINER
   ===================================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    transition: width var(--sidebar-transition), transform var(--sidebar-transition);
    overflow-x: hidden;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

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

/* =====================================================
   SIDEBAR HEADER
   ===================================================== */
.sidebar-header {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    background: var(--sidebar-header-bg);
    border-bottom: 1px solid var(--sidebar-divider);
    min-height: 64px;
    flex-shrink: 0;
}

.sidebar-logo {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.sidebar-header .brand-text {
    margin-left: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar-toggle {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--sidebar-text);
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle:hover {
    background: var(--sidebar-active-bg);
    color: #fff;
}

.sidebar-toggle i {
    transition: transform 0.3s ease;
}

/* Collapsed state */
.sidebar.collapsed .brand-text {
    opacity: 0;
    width: 0;
    margin: 0;
}

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

.sidebar.collapsed .sidebar-toggle i {
    transform: rotate(180deg);
}

/* =====================================================
   SIDEBAR NAVIGATION
   ===================================================== */
.sidebar-nav {
    flex: 1;
    min-height: 0; /* Necessario per abilitare scroll in flex container */
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 0;
    list-style: none;
    margin: 0;
    /* Firefox scrollbar */
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) rgba(0, 0, 0, 0.2);
}

.sidebar-nav::-webkit-scrollbar {
    width: 8px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Nav Items */
.sidebar-nav .nav-item {
    position: relative;
    margin: 2px 8px;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    border-left: 3px solid transparent;
    margin-left: -3px;
}

.sidebar-nav .nav-link:hover {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-text-hover);
}

.sidebar-nav .nav-link i:first-child {
    width: 24px;
    font-size: 1.1rem;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-nav .nav-link .nav-text {
    margin-left: 12px;
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar-nav .nav-link .submenu-arrow {
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform 0.2s ease;
    opacity: 0.7;
}

/* Active state */
.sidebar-nav .nav-link.active {
    background: var(--sidebar-active-bg);
    color: #fff;
    font-weight: 600;
    border-left-color: var(--sidebar-active-border);
}

/* Parent active (quando sottomenu e' attivo) */
.sidebar-nav .nav-item.parent-active > .nav-link {
    color: #fff;
    font-weight: 600;
}

/* =====================================================
   SUBMENU
   ===================================================== */
.sidebar-nav .submenu {
    list-style: none;
    padding: 0;
    margin: 4px 0 4px 0;
    background: var(--sidebar-submenu-bg);
    border-radius: 6px;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.2s ease;
}

.sidebar-nav .nav-item.open > .submenu {
    max-height: 500px;
    opacity: 1;
}

.sidebar-nav .nav-item.open > .nav-link .submenu-arrow {
    transform: rotate(180deg);
}

.sidebar-nav .submenu .nav-link {
    padding: 10px 16px 10px 52px;
    font-size: 0.9rem;
    border-left: none;
    margin-left: 0;
}

.sidebar-nav .submenu .nav-link::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sidebar-text);
    margin-right: 12px;
    opacity: 0.5;
    transition: all 0.2s ease;
}

.sidebar-nav .submenu .nav-link:hover::before,
.sidebar-nav .submenu .nav-link.active::before {
    background: var(--sidebar-active-border);
    opacity: 1;
}

.sidebar-nav .submenu .nav-link.active {
    background: transparent;
    border-left: none;
}

/* Collapsed state - hide text */
.sidebar.collapsed .nav-text,
.sidebar.collapsed .submenu-arrow {
    opacity: 0;
    width: 0;
    margin: 0;
    overflow: hidden;
}

.sidebar.collapsed .submenu {
    display: none;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 12px;
}

/* =====================================================
   SIDEBAR DIVIDER
   ===================================================== */
.sidebar-divider {
    height: 1px;
    background: var(--sidebar-divider);
    margin: 12px 16px;
}

/* =====================================================
   SIDEBAR FOOTER
   ===================================================== */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--sidebar-divider);
    background: var(--sidebar-header-bg);
    flex-shrink: 0;
}

.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    color: var(--sidebar-text);
}

.sidebar-footer .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--sidebar-active-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    flex-shrink: 0;
}

.sidebar-footer .user-details {
    margin-left: 12px;
    overflow: hidden;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar-footer .user-name {
    font-weight: 500;
    color: #fff;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer .user-role {
    font-size: 0.75rem;
    color: var(--sidebar-text);
}

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

.sidebar-footer .logout-btn {
    background: transparent;
    border: none;
    color: var(--sidebar-text);
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-footer .logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* User avatar e details come link */
.sidebar-footer a.user-avatar,
.sidebar-footer a.user-details {
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-footer a.user-avatar:hover {
    background: var(--sidebar-active-border);
    filter: brightness(1.2);
}

.sidebar-footer a.user-details:hover .user-name {
    color: var(--sidebar-active-border);
}

/* Auth links (Login/Registrati) */
.sidebar-footer .auth-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-footer .auth-links .nav-link {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.sidebar-footer .auth-links .nav-link:hover {
    background: var(--sidebar-active-bg);
    color: #fff;
}

.sidebar-footer .auth-links .nav-link i {
    width: 24px;
    text-align: center;
}

.sidebar-footer .auth-links .nav-link .nav-text {
    margin-left: 10px;
}

.sidebar.collapsed .auth-links .nav-text {
    display: none;
}

.sidebar.collapsed .auth-links .nav-link {
    justify-content: center;
    padding: 10px;
}

.sidebar.collapsed .user-details {
    opacity: 0;
    width: 0;
    margin: 0;
}

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

/* =====================================================
   MAIN CONTENT
   ===================================================== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--sidebar-transition);
    background: var(--bg-secondary, #f8f9fa);
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* =====================================================
   MOBILE HEADER
   ===================================================== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--mobile-header-height);
    background: var(--sidebar-bg);
    z-index: 1040;
    align-items: center;
    padding: 0 16px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-toggle {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.mobile-toggle:hover {
    background: var(--sidebar-active-bg);
}

.mobile-header .brand-text {
    margin-left: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
}

/* =====================================================
   OVERLAY
   ===================================================== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1045;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

/* =====================================================
   MOBILE RESPONSIVE
   ===================================================== */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

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

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

    .main-content {
        margin-left: 0;
        padding-top: var(--mobile-header-height);
    }

    .sidebar.collapsed ~ .main-content {
        margin-left: 0;
    }

    .mobile-header {
        display: flex;
    }

    .sidebar-overlay {
        display: block;
        pointer-events: none;
    }

    .sidebar-overlay.active {
        pointer-events: auto;
    }

    /* Hide toggle button on mobile */
    .sidebar-toggle {
        display: none;
    }

    /* Reset collapsed state on mobile */
    .sidebar.collapsed .nav-text,
    .sidebar.collapsed .submenu-arrow,
    .sidebar.collapsed .brand-text,
    .sidebar.collapsed .user-details {
        opacity: 1;
        width: auto;
        margin-left: 12px;
    }

    .sidebar.collapsed .nav-link {
        justify-content: flex-start;
        padding: 12px 16px;
    }

    .sidebar.collapsed .submenu {
        display: block;
    }
}

/* =====================================================
   TOOLTIP FOR COLLAPSED STATE (Desktop)
   ===================================================== */
@media (min-width: 992px) {
    .sidebar.collapsed .nav-item {
        position: relative;
    }

    .sidebar.collapsed .nav-item::after {
        content: attr(data-title);
        position: absolute;
        left: 100%;
        top: 50%;
        transform: translateY(-50%);
        background: #1a1d23;
        color: #fff;
        padding: 6px 12px;
        border-radius: 6px;
        font-size: 0.85rem;
        white-space: nowrap;
        opacity: 0;
        visibility: hidden;
        transition: all 0.2s ease;
        margin-left: 8px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        z-index: 1060;
    }

    .sidebar.collapsed .nav-item:hover::after {
        opacity: 1;
        visibility: visible;
    }
}

/* =====================================================
   NO SIDEBAR (Login page, non authenticated)
   ===================================================== */
.no-sidebar .main-content {
    margin-left: 0 !important;
    padding-top: 0 !important;
}

.no-sidebar .main-content .container-fluid {
    max-width: 500px;
    margin: 0 auto;
    padding-top: 60px;
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .sidebar,
    .mobile-header,
    .sidebar-overlay {
        display: none !important;
    }

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