/* =========================================
   3. LAYOUT
   ========================================= */

/* Main Layout */
.main-layout { display: flex; height: 100vh; overflow: hidden; width: 100%; margin: 0; padding: 0; }

/* Sidebar Overlay — hidden on desktop */
.sidebar-overlay { display: none; }

.content-wrapper {
    flex: 1; height: 100vh; overflow-y: auto; overflow-x: hidden;
    position: relative; display: flex; flex-direction: column;
    width: 100%; background: var(--bg-root);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.content-wrapper::-webkit-scrollbar { width: 6px; }
.content-wrapper::-webkit-scrollbar-track { background: transparent; }
.content-wrapper::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex; flex-direction: column;
    height: 100vh; z-index: 1040;
    flex-shrink: 0; position: relative;
    overflow: visible; /* Changed from hidden to allow overlapping toggle button */
    will-change: width;
    transition: width 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Ambient glow in sidebar */
.sidebar-glow {
    position: absolute; top: -60px; left: -40px;
    width: 180px; height: 180px; border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%);
    opacity: 0.4; pointer-events: none; filter: blur(40px);
    transition: opacity 0.5s ease;
    z-index: 0;
}
.sidebar:hover .sidebar-glow { opacity: 0.6; }

/* Sidebar Header */
.sidebar-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 1.15rem 0.75rem;
    position: relative;
    min-height: 56px;
    transition: padding 0.4s cubic-bezier(0.25,0.8,0.25,1);
    z-index: 2;
}

/* Logo */
.sidebar-logo {
    display: flex; align-items: center; gap: 11px;
    min-width: 0; flex: 1;
    transition: gap 0.4s cubic-bezier(0.25,0.8,0.25,1);
}
.logo-icon {
    width: 38px; height: 38px; border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-lighter));
    color: #fff; display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 20px -4px var(--accent-glow),
                inset 0 1px 0 rgba(255,255,255,0.15);
    transition: transform 0.3s cubic-bezier(0.25,0.8,0.25,1),
                box-shadow 0.3s ease;
}
.sidebar:not(.collapsed) .logo-icon:hover {
    transform: scale(1.05) rotate(-3deg);
    box-shadow: 0 6px 28px -4px var(--accent-glow);
}

/* When there's a custom logo: hide icon in expanded, show full img */
.sidebar:not(.collapsed) .logo-icon-img { display: none; }
.sidebar-logo-full {
    transition: max-width 0.4s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.3s ease 0.05s;
}
/* When collapsed: show icon, hide full img */
.sidebar.collapsed .logo-icon-img { display: flex; }
.sidebar.collapsed .sidebar-logo-full {
    max-width: 0; opacity: 0; overflow: hidden; margin: 0;
}

.logo-text-group {
    display: flex; flex-direction: column; min-width: 0;
    overflow: hidden;
}
.logo-text {
    font-family: var(--font-display); font-size: 1.15rem; font-weight: 600;
    color: var(--text-primary); letter-spacing: -0.02em;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    line-height: 1.2;
}
.logo-subtitle {
    font-size: 0.65rem; font-weight: 500; text-transform: uppercase;
    letter-spacing: 0.12em; color: var(--text-muted);
    line-height: 1;
}

/* Sidebar Toggle Button */
.sidebar-toggle-btn {
    position: absolute;
    right: -13px; /* Overlap border exactly */
    top: 1.4rem;
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: all 0.25s cubic-bezier(0.25,0.8,0.25,1);
    z-index: 1050;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}
.sidebar-toggle-btn:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.sidebar-toggle-btn:active { transform: scale(0.95); }
.sidebar-toggle-icon {
    display: flex; align-items: center; justify-content: center;
    transition: transform 0.4s cubic-bezier(0.25,0.8,0.25,1);
    color: inherit;
}


/* Section Labels */
.sidebar-section-label {
    padding: 0.5rem 1.25rem 0.4rem;
    font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.14em; color: var(--text-muted);
    opacity: 0.6; pointer-events: none;
    transition: opacity 0.3s ease;
}

/* Sidebar Labels (text that hides when collapsed) */
.sidebar-label {
    white-space: nowrap; overflow: hidden;
    max-width: 200px; opacity: 1;
    transition: max-width 0.4s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.3s ease 0.05s,
                margin 0.4s cubic-bezier(0.25,0.8,0.25,1);
}

/* Nav Scroll Container */
.sidebar-nav {
    display: flex; flex-direction: column; gap: 2px;
    padding: 0 0.65rem;
    overflow-x: hidden; overflow-y: auto;
}
.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

/* Nav Items */
.sidebar-nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 0.55rem 0.65rem;
    border-radius: 10px;
    color: var(--text-secondary);
    font-weight: 500; font-size: 0.855rem;
    text-decoration: none;
    position: relative; overflow: hidden;
    transition: all 0.25s cubic-bezier(0.25,0.8,0.25,1);
}
.sidebar-nav-item::before {
    content: ''; position: absolute; inset: 0;
    border-radius: 10px; opacity: 0;
    background: linear-gradient(135deg, var(--accent-subtle), rgba(217,119,6,0.04));
    transition: opacity 0.25s ease;
}
.sidebar-nav-item:hover {
    color: var(--text-primary);
}
.sidebar-nav-item:hover::before { opacity: 1; }
.sidebar-nav-item:hover .sidebar-nav-icon { color: var(--accent-light); transform: scale(1.08); }

/* Nav Icon */
.sidebar-nav-icon {
    width: 34px; height: 34px; border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; position: relative; z-index: 1;
    color: var(--text-muted);
    transition: all 0.25s cubic-bezier(0.25,0.8,0.25,1);
}

/* Active Nav Item */
.sidebar-nav-item.active {
    color: var(--accent-light);
    font-weight: 600;
}
.sidebar-nav-item.active::before {
    opacity: 1;
    background: linear-gradient(135deg, var(--accent-subtle), rgba(217,119,6,0.06));
}
.sidebar-nav-item.active::after {
    content: ''; position: absolute; left: 0; top: 50%;
    transform: translateY(-50%);
    width: 3px; height: 18px; border-radius: 0 3px 3px 0;
    background: linear-gradient(180deg, var(--accent-light), var(--accent));
    box-shadow: 0 0 12px var(--accent-glow);
}
.sidebar-nav-item.active .sidebar-nav-icon {
    color: var(--accent-light);
    background: var(--accent-subtle);
    box-shadow: 0 0 16px -4px var(--accent-glow);
}
.nav-active-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent-light);
    box-shadow: 0 0 8px var(--accent-glow);
    margin-left: auto; flex-shrink: 0;
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* Sidebar User Card */
.sidebar-user-card {
    display: flex; align-items: center; gap: 10px;
    padding: 0.7rem 0.8rem;
    margin: 0.25rem 0.65rem 0.75rem;
    border-radius: 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    cursor: pointer;
    position: relative; overflow: hidden;
    transition: all 0.3s cubic-bezier(0.25,0.8,0.25,1);
}
.sidebar-user-card::before {
    content: ''; position: absolute; inset: 0;
    border-radius: 12px; opacity: 0;
    background: linear-gradient(135deg, var(--accent-subtle), transparent);
    transition: opacity 0.3s ease;
}
.sidebar-user-card:hover {
    border-color: rgba(217,119,6,0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px -4px rgba(0,0,0,0.2);
}
.sidebar-user-card:hover::before { opacity: 1; }
.sidebar-user-card:active { transform: translateY(0) scale(0.99); }

/* User Avatar */
.sidebar-user-avatar {
    width: 34px; height: 34px; border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-lighter));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.8rem; flex-shrink: 0;
    position: relative; z-index: 1;
    box-shadow: 0 2px 10px -2px var(--accent-glow);
}
.avatar-status {
    position: absolute; bottom: -1px; right: -1px;
    width: 10px; height: 10px; border-radius: 50%;
    background: #22c55e;
    border: 2px solid var(--bg-surface);
    z-index: 2;
}

/* User Info */
.sidebar-user-info {
    display: flex; flex-direction: column; min-width: 0;
    flex: 1; position: relative; z-index: 1;
}
.sidebar-user-name {
    font-size: 0.8rem; font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    line-height: 1.3;
}
.sidebar-user-email {
    font-size: 0.67rem; color: var(--text-muted);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    line-height: 1.2;
}

/* Logout Button */
.sidebar-logout-btn {
    width: 30px; height: 30px; border-radius: 8px;
    background: transparent; border: 1px solid transparent;
    color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; cursor: pointer;
    position: relative; z-index: 1;
    transition: all 0.25s ease;
}
.sidebar-logout-btn:hover {
    background: rgba(239,68,68,0.1);
    border-color: rgba(239,68,68,0.2);
    color: #ef4444;
}

/* ===== COLLAPSED STATE ===== */
.sidebar.collapsed {
    width: 72px;
}
.sidebar.collapsed .sidebar-glow { opacity: 0.2; }
.sidebar.collapsed .sidebar-label {
    max-width: 0; opacity: 0; pointer-events: none; margin: 0;
    transition: max-width 0.3s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.15s ease;
}
.sidebar.collapsed .sidebar-header {
    padding: 1.25rem 0.5rem 0.75rem;
    justify-content: center;
}
.sidebar.collapsed .sidebar-logo {
    justify-content: center; gap: 0;
}
.sidebar.collapsed .logo-icon-img {
    display: flex;
}
.sidebar.collapsed .sidebar-toggle-icon {
    transform: rotate(180deg);
}
.sidebar.collapsed .sidebar-section-label {
    padding: 0.5rem 0; text-align: center;
    font-size: 0; /* hide text */
}
.sidebar.collapsed .sidebar-section-label::after {
    content: ''; display: block; width: 16px; height: 1px;
    background: var(--border-color); margin: 0 auto;
    font-size: 0;
}
.sidebar.collapsed .sidebar-nav {
    padding: 0 0.5rem;
    align-items: center;
}
.sidebar.collapsed .sidebar-nav-item {
    justify-content: center; padding: 0.55rem;
    gap: 0; width: 44px; margin: 0 auto;
}
.sidebar.collapsed .sidebar-nav-item::after { display: none; }
.sidebar.collapsed .sidebar-nav-item.active {
    background: var(--accent-subtle);
}
.sidebar.collapsed .sidebar-nav-item.active .sidebar-nav-icon {
    box-shadow: 0 0 20px -4px var(--accent-glow);
}
.sidebar.collapsed .sidebar-user-card {
    padding: 0.55rem; margin: 0.25rem 0.5rem 0.75rem;
    justify-content: center;
    gap: 0;
}
.sidebar.collapsed .sidebar-user-card .sidebar-user-info,
.sidebar.collapsed .sidebar-user-card .sidebar-logout-btn {
    max-width: 0; opacity: 0; overflow: hidden;
    padding: 0; border: 0; min-width: 0;
    transition: max-width 0.3s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.15s ease;
}
.sidebar:not(.collapsed) .sidebar-user-card .sidebar-user-info {
    max-width: 200px; opacity: 1;
    transition: max-width 0.4s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.3s ease 0.1s;
}
.sidebar:not(.collapsed) .sidebar-user-card .sidebar-logout-btn {
    max-width: 40px; opacity: 1;
    transition: max-width 0.4s cubic-bezier(0.25,0.8,0.25,1),
                opacity 0.3s ease 0.1s;
}

/* Topbar */
.topbar {
    padding: 0.85rem 1.5rem; background: var(--topbar-bg);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; z-index: 1030; gap: 1rem; position: sticky; top: 0;
}

/* Progress Bar */
#nprogress-bar {
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-lighter));
    box-shadow: none;
    opacity: 0;
    transition: opacity 0.2s ease, width 0.2s ease;
}
#nprogress-bar.active {
    opacity: 1;
    box-shadow: 0 0 12px var(--accent-glow);
}

/* Page Transitions */
.page-exit { opacity: 0; transform: translateY(8px); }
.page-enter { opacity: 0; transform: translateY(8px); }
.page-enter-active { opacity: 1; transform: translateY(0); transition: opacity 0.3s ease, transform 0.3s ease; }

/* Mobile */
@media (max-width: 991.98px) {
    .sidebar {
        position: fixed; top: 0; bottom: 0; left: 0;
        transform: translateX(-100%); width: var(--sidebar-width) !important;
        box-shadow: 8px 0 32px rgba(0,0,0,0.3);
        transition: transform 0.4s cubic-bezier(0.25,0.8,0.25,1),
                    box-shadow 0.4s ease;
    }
    /* On mobile, always show as expanded (ignore collapsed state) */
    .sidebar.collapsed { width: var(--sidebar-width) !important; }
    .sidebar.collapsed .sidebar-label {
        max-width: 200px; opacity: 1; pointer-events: auto; margin: initial;
    }
    .sidebar.collapsed .sidebar-nav-item {
        justify-content: flex-start; padding: 0.55rem 0.65rem; gap: 10px;
        width: auto; margin: 0;
    }
    .sidebar.collapsed .sidebar-header {
        padding: 1.25rem 1.15rem 0.75rem; justify-content: space-between;
    }
    .sidebar.collapsed .sidebar-logo { justify-content: flex-start; gap: 11px; }
    .sidebar.collapsed .sidebar-toggle-btn { display: none !important; position: static; }
    .sidebar.collapsed .sidebar-nav { padding: 0 0.65rem; align-items: stretch; }
    .sidebar.collapsed .sidebar-section-label { padding: 0.5rem 1.25rem 0.4rem; font-size: 0.6rem; text-align: left; }
    .sidebar.collapsed .sidebar-section-label::after { display: none; }
    .sidebar.collapsed .sidebar-user-card {
        gap: 10px; padding: 0.7rem 0.8rem; margin: 0.25rem 0.65rem 0.75rem;
        justify-content: flex-start;
    }
    .sidebar.collapsed .sidebar-user-card .sidebar-user-info {
        max-width: 200px; opacity: 1;
    }
    .sidebar.collapsed .sidebar-user-card .sidebar-logout-btn {
        max-width: 40px; opacity: 1; border: 1px solid transparent;
    }
    .sidebar.show { transform: translateX(0); }
    .sidebar-overlay {
        display: block;
        position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
        background: rgba(0,0,0,0.6); z-index: 1030;
        backdrop-filter: blur(4px);
        opacity: 0; pointer-events: none;
        transition: opacity 0.4s ease;
    }
    .sidebar-overlay.show { opacity: 1; pointer-events: auto; }
    .topbar { padding: 0.65rem 1rem; }
}