/* ProAutek Admin — Sidebar v4 */
:root {
    --sb-bg-main: #0f172a;
    --sb-bg-secondary: #1e293b;
    --sb-bg-hover: #334155;
    --sb-active: #2563eb;
    --sb-active-bg: #1d3a6e;
    --sb-text: #e2e8f0;
    --sb-text-muted: #94a3b8;
    --sb-border: #1e293b;
    --sb-width-collapsed: 64px;
    --sb-width-expanded: 250px;
    --sb-speed: 0.25s ease;
}

.sidebar {
    background: var(--sb-bg-main);
    width: var(--sb-width-collapsed);
    height: 100vh;
    position: fixed;
    top: 0; left: 0;
    z-index: 1030;
    display: flex;
    flex-direction: column;
    padding: 12px 8px;
    box-shadow: 2px 0 20px rgba(0,0,0,0.3);
    transition: width var(--sb-speed);
    font-family: system-ui, -apple-system, sans-serif;
    box-sizing: border-box;
}
.sidebar.expanded { width: var(--sb-width-expanded); }

.hide-scrollbar { scrollbar-width: none; overflow-y: auto; }
.hide-scrollbar::-webkit-scrollbar { display: none; }

/* Header */
.sidebar-header-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-bottom: 1px solid var(--sb-border);
    padding-bottom: 10px;
    margin-bottom: 8px;
}
.sidebar.expanded .sidebar-header-zone { align-items: stretch; }

.sidebar-toggle {
    background: none; border: none;
    color: var(--sb-text-muted);
    font-size: 1.3rem;
    padding: 6px;
    cursor: pointer;
    border-radius: 6px;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--sb-speed);
}
.sidebar-toggle:hover { background: var(--sb-bg-hover); color: #fff; }
.sidebar.expanded .sidebar-toggle { align-self: flex-end; }

.navbar-brand {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 6px;
    text-decoration: none;
    color: var(--sb-text);
    font-weight: 700;
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
}
.navbar-brand i { font-size: 1.3rem; color: var(--sb-active); min-width: 22px; text-align: center; }
.sidebar:not(.expanded) .navbar-brand span { display: none; }

/* Nav */
.sidebar .nav {
    list-style: none;
    flex: 1;
    width: 100%;
    padding: 0; margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.sidebar .nav-item { width: 100%; }

.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--sb-text-muted);
    padding: 10px 12px;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--sb-speed);
    cursor: pointer;
}
.sidebar .nav-link .menu-icon {
    font-size: 1.1rem;
    min-width: 22px;
    text-align: center;
    flex-shrink: 0;
    color: inherit;
}
.sidebar:not(.expanded) .nav-link .link-text,
.sidebar:not(.expanded) .nav-link .menu-arrow { display: none; }
.sidebar:not(.expanded) .nav-link { justify-content: center; padding: 10px 6px; }
.sidebar:not(.expanded) .nav-link .menu-icon { margin: 0; }

.sidebar .nav-link:hover { background: var(--sb-bg-hover); color: var(--sb-text); }
.sidebar .nav-link.active { background: var(--sb-active-bg); color: #fff; border-left: 3px solid var(--sb-active); }
.sidebar .nav-link.active .menu-icon { color: #60a5fa; }

/* Arrow */
.sidebar .menu-arrow {
    margin-left: auto;
    font-size: 0.6rem;
    transition: transform var(--sb-speed);
    opacity: 0.5;
}
.sidebar .nav-link[aria-expanded="true"] .menu-arrow { transform: rotate(90deg); opacity: 1; }

/* Submenus — accordion style always */
.sidebar .submenu {
    display: none;
    list-style: none;
    background: var(--sb-bg-secondary);
    border-radius: 6px;
    margin: 2px 0 2px 0;
    padding: 4px 0;
    overflow: hidden;
}
.sidebar .submenu.show { display: block; animation: slideDown 0.2s ease-out; }

.sidebar .submenu .nav-link {
    padding: 9px 12px 9px 48px;
    font-size: 0.82rem;
    border-radius: 0;
    border-left: 2px solid transparent;
}
.sidebar .submenu .nav-link:hover { background: rgba(255,255,255,0.03); }
.sidebar .submenu .nav-link.active { background: rgba(37,99,235,0.15); border-left-color: var(--sb-active); }
.sidebar:not(.expanded) .submenu .nav-link { padding: 10px; justify-content: center; }
.sidebar:not(.expanded) .submenu .nav-link .link-text { display: none; }

/* Footer */
.sidebar-footer {
    border-top: 1px solid var(--sb-border);
    padding-top: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.avatar-btn {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: #2563eb;
    color: #fff;
    border: 2px solid var(--sb-border);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--sb-speed);
    text-transform: uppercase;
}
.avatar-btn:hover { background: #3b82f6; }

.user-dropdown {
    display: none;
    position: absolute;
    bottom: 55px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--sb-bg-secondary);
    min-width: 170px;
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    border: 1px solid var(--sb-border);
    z-index: 1040;
    text-align: center;
}
.user-dropdown.open { display: block; }
.user-dropdown .uname { font-weight: 600; color: var(--sb-text); font-size: 0.85rem; margin-bottom: 2px; }
.user-dropdown .urole { font-size: 0.7rem; color: var(--sb-active); text-transform: uppercase; margin-bottom: 10px; }
.user-dropdown .logout-btn {
    display: flex; align-items: center; justify-content: center; gap: 5px;
    background: #dc2626; color: #fff;
    text-decoration: none;
    padding: 6px 12px;
    font-size: 0.78rem;
    border-radius: 6px;
    transition: background 0.2s;
}
.user-dropdown .logout-btn:hover { background: #b91c1c; }

/* Content */
.main-content {
    margin-left: var(--sb-width-collapsed);
    transition: margin-left var(--sb-speed);
}
.sidebar.expanded ~ .main-content { margin-left: var(--sb-width-expanded); }

@keyframes slideDown { from { opacity: 0; max-height: 0; } to { opacity: 1; max-height: 500px; } }

/* ═══════════════════════════════════════════════
   RESPONSIVE: Tablet y móvil (≤991px)
   ═══════════════════════════════════════════════ */
@media (max-width: 991px) {
    /* Sidebar: overlay que se desliza desde la izquierda */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--sb-width-expanded);
        height: 100vh;
        z-index: 99990;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 4px 0 30px rgba(0,0,0,0.5);
    }
    .sidebar.expanded {
        transform: translateX(0);
    }
    .sidebar:not(.expanded) {
        width: var(--sb-width-expanded); /* mantener ancho completo para la animación */
    }

    /* Mostrar siempre textos en sidebar cuando está abierta en móvil */
    .sidebar.expanded .nav-link .link-text,
    .sidebar.expanded .nav-link .nav-text,
    .sidebar.expanded .nav-link .menu-arrow { display: inline !important; }
    .sidebar.expanded .nav-link { justify-content: flex-start !important; padding: 10px 12px !important; }
    .sidebar.expanded .navbar-brand span,
    .sidebar.expanded .sidebar-user-area .nav-text { display: inline !important; }
    .sidebar.expanded .navbar-brand { font-size: 1rem !important; padding: 8px 6px !important; }
    .sidebar.expanded .sidebar-user-area .btn { display: inline-flex !important; }
    .sidebar.expanded .sidebar-user-area > div { justify-content: flex-start !important; }
    .sidebar.expanded .sidebar-user-area { padding-left: 8px !important; padding-right: 8px !important; }

    /* Sidebar colapsada en móvil: oculta (solo se ve el toggle flotante) */
    .sidebar:not(.expanded) { transform: translateX(-100%); }

    /* Toggle button: siempre visible como botón flotante */
    .sidebar .sidebar-toggle {
        position: fixed;
        top: 10px;
        left: 10px;
        z-index: 99995;
        background: var(--sb-bg-main);
        color: var(--sb-text);
        border-radius: 50%;
        width: 42px;
        height: 42px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.35);
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.2s;
    }
    .sidebar.expanded .sidebar-toggle {
        left: calc(var(--sb-width-expanded) - 50px);
        background: transparent;
        box-shadow: none;
    }

    /* Overlay oscuro detrás de la sidebar abierta */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.55);
        z-index: 99985;
        backdrop-filter: blur(2px);
    }
    .sidebar-overlay.active { display: block; }

    /* Main content: sin margen lateral en móvil */
    .main-content {
        margin-left: 0 !important;
        padding-top: 56px; /* espacio para el toggle flotante */
    }

    /* Submenús: siempre accordion (nunca flyout) en móvil */
    .sidebar .collapse[data-flyout-open] {
        position: static !important;
        left: auto !important;
        top: auto !important;
        z-index: auto !important;
        min-width: auto !important;
        transform: none !important;
        opacity: 1 !important;
        background: var(--sb-bg-secondary) !important;
    }

    /* Links más grandes para dedos en móvil */
    .sidebar .nav-link {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
    .sidebar .submenu .nav-link {
        padding: 11px 16px 11px 52px;
    }
}

/* ═══════════════════════════════════════════════
   RESPONSIVE: Móvil pequeño (≤575px)
   ═══════════════════════════════════════════════ */
@media (max-width: 575px) {
    .sidebar {
        width: 100vw;
        max-width: 300px;
    }
    .sidebar.expanded .sidebar-toggle {
        left: calc(min(100vw, 300px) - 50px);
    }

    /* Toggle más grande y accesible */
    .sidebar .sidebar-toggle {
        width: 46px;
        height: 46px;
        font-size: 1.5rem;
    }

    /* Links más cómodos para pulgar */
    .sidebar .nav-link {
        padding: 14px 18px;
        font-size: 0.95rem;
    }
    .sidebar .submenu .nav-link {
        padding: 13px 18px 13px 56px;
        font-size: 0.88rem;
    }

    /* Dropdown de usuario más ancho */
    .user-dropdown {
        min-width: 200px;
        left: 10px;
        transform: none;
    }
}