/* NCH Dashboard Shell v5.0
 * Sidebar navigation + content layout + dashboard components
 * Replaces top-only navbar with persistent sidebar */

/* ═══════════════════════════════════════════════════════════
   LAYOUT: Sidebar + Content Grid
   ═══════════════════════════════════════════════════════════ */

:root {
    --sidebar-w: 260px;
    --sidebar-w-collapsed: 64px;
    --topbar-h: 52px;
    --sidebar-bg: #0a0e14;
    --sidebar-border: #1c2028;
    --sidebar-hover: rgba(189,255,0,.06);
    --sidebar-active: rgba(189,255,0,.10);
    --sidebar-text: #848D97;
    --sidebar-text-hover: #c9d1d9;
    --sidebar-icon: #484F58;
    --sidebar-group-text: #484F58;
}

[data-theme="light"] {
    --sidebar-bg: #f6f8fa;
    --sidebar-border: #d0d7de;
    --sidebar-hover: rgba(0,0,0,.04);
    --sidebar-active: rgba(0,0,0,.06);
    --sidebar-text: #656D76;
    --sidebar-text-hover: #1F2328;
    --sidebar-icon: #8B949E;
    --sidebar-group-text: #8B949E;
}

/* Top bar (slim) */
.shell-topbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--topbar-h);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px 0 0;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.topbar-left {
    display: flex; align-items: center; gap: 0;
    height: 100%;
}

.topbar-brand {
    width: var(--sidebar-w);
    display: flex; align-items: center; gap: 10px;
    padding: 0 16px;
    height: 100%;
    border-right: 1px solid var(--sidebar-border);
    text-decoration: none; color: inherit;
    transition: width .2s cubic-bezier(.4,0,.2,1);
}
.sidebar-collapsed .topbar-brand {
    width: var(--sidebar-w-collapsed);
    justify-content: center;
    padding: 0;
}
.topbar-brand img { height: 28px; width: auto; flex-shrink: 0; }
.topbar-brand-text {
    font-family: var(--font-heading);
    font-size: .82rem; font-weight: 800; letter-spacing: .04em;
    color: var(--accent); white-space: nowrap;
    overflow: hidden;
    transition: opacity .15s, width .2s;
}
.sidebar-collapsed .topbar-brand-text { opacity: 0; width: 0; }

.topbar-toggle {
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); padding: 8px 14px;
    font-size: 1.1rem; line-height: 1;
    display: flex; align-items: center;
    transition: color .15s;
}
.topbar-toggle:hover { color: var(--text-primary); }
.topbar-toggle svg { width: 18px; height: 18px; }

.topbar-center {
    flex: 1; display: flex; align-items: center;
    padding: 0 16px; gap: 12px;
}

.topbar-search {
    position: relative; width: 100%; max-width: 420px;
}
.topbar-search input {
    width: 100%; padding: 7px 12px 7px 34px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 6px; color: var(--text-primary);
    font-size: .82rem; outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.topbar-search input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(189,255,0,.08);
}
.topbar-search input::placeholder { color: var(--text-muted); }
.topbar-search-icon {
    position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
    color: var(--text-muted); font-size: .85rem; pointer-events: none;
}
.topbar-search kbd {
    position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
    font-size: .65rem; padding: 1px 5px; background: var(--bg-surface);
    border: 1px solid var(--border); border-radius: 3px;
    color: var(--text-muted); font-family: var(--font-mono);
    pointer-events: none;
}

.topbar-right {
    display: flex; align-items: center; gap: 4px;
    flex-shrink: 0;
}

.topbar-btn {
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); padding: 6px 8px;
    border-radius: 6px; font-size: .9rem; line-height: 1;
    position: relative; transition: all .15s;
    display: flex; align-items: center; justify-content: center;
}
.topbar-btn:hover { background: var(--sidebar-hover); color: var(--text-primary); }

.topbar-dot {
    position: absolute; top: 4px; right: 4px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent); border: 2px solid var(--bg-primary);
}

.topbar-avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: var(--accent); color: var(--bg-primary);
    font-size: .72rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: opacity .15s;
    margin-left: 4px;
}
.topbar-avatar:hover { opacity: .8; }

.topbar-user-name {
    font-size: .78rem; font-weight: 500; color: var(--text-secondary);
    margin-left: 6px; margin-right: 4px;
    white-space: nowrap;
}

/* ═══════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════ */

.shell-sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0;
    width: var(--sidebar-w); z-index: 900;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex; flex-direction: column;
    overflow: hidden;
    transition: width .2s cubic-bezier(.4,0,.2,1);
}

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

.sidebar-scroll {
    flex: 1; overflow-y: auto; overflow-x: hidden;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--sidebar-border) transparent;
}
.sidebar-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--sidebar-border); border-radius: 2px; }

/* Sidebar groups */
.sb-group { margin-bottom: 4px; }

.sb-group-label {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 16px 4px;
    font-size: .65rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .1em;
    color: var(--sidebar-group-text);
    cursor: pointer; user-select: none;
    transition: color .15s;
}
.sb-group-label:hover { color: var(--sidebar-text-hover); }
.sb-group-arrow {
    font-size: .6rem; transition: transform .2s;
    color: var(--sidebar-group-text);
}
.sb-group.collapsed .sb-group-arrow { transform: rotate(-90deg); }
.sb-group.collapsed .sb-group-items { display: none; }

.sidebar-collapsed .sb-group-label {
    justify-content: center; padding: 8px 0 4px;
    font-size: 0; /* hide text */
}
.sidebar-collapsed .sb-group-label::after {
    content: ''; display: block;
    width: 16px; height: 1px;
    background: var(--sidebar-border);
}
.sidebar-collapsed .sb-group-arrow { display: none; }

/* Sidebar links */
.sb-link {
    display: flex; align-items: center; gap: 10px;
    padding: 7px 16px; margin: 1px 8px;
    border-radius: 6px;
    color: var(--sidebar-text); text-decoration: none;
    font-size: .82rem; font-weight: 400;
    white-space: nowrap; overflow: hidden;
    transition: all .12s;
    position: relative;
}
.sb-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-hover);
}
.sb-link.active {
    background: var(--sidebar-active);
    color: var(--accent);
    font-weight: 600;
}
.sb-link.active::before {
    content: ''; position: absolute; left: 0; top: 4px; bottom: 4px;
    width: 3px; border-radius: 0 3px 3px 0;
    background: var(--accent);
}

.sb-icon {
    flex-shrink: 0; width: 18px; height: 18px;
    display: flex; align-items: center; justify-content: center;
    font-size: .95rem; line-height: 1;
    opacity: .7;
}
.sb-link.active .sb-icon { opacity: 1; }
.sb-link:hover .sb-icon { opacity: .9; }

.sb-label {
    flex: 1; overflow: hidden; text-overflow: ellipsis;
    transition: opacity .15s, width .2s;
}
.sidebar-collapsed .sb-label { opacity: 0; width: 0; }

.sb-badge {
    font-size: .65rem; font-weight: 700;
    padding: 1px 6px; border-radius: 10px;
    background: rgba(189,255,0,.15); color: var(--accent);
    flex-shrink: 0;
    transition: opacity .15s;
}
.sidebar-collapsed .sb-badge { opacity: 0; position: absolute; }

/* Collapsed: center icons */
.sidebar-collapsed .sb-link {
    justify-content: center; padding: 9px 0; margin: 1px 8px;
}
.sidebar-collapsed .sb-link.active::before {
    left: -8px;
}

/* Sidebar tooltip on collapsed hover */
.sidebar-collapsed .sb-link { position: relative; }
.sidebar-collapsed .sb-link::after {
    content: attr(data-tooltip);
    position: absolute; left: calc(100% + 12px); top: 50%;
    transform: translateY(-50%);
    background: var(--bg-card); border: 1px solid var(--border);
    color: var(--text-primary); font-size: .78rem; font-weight: 500;
    padding: 4px 10px; border-radius: 4px;
    white-space: nowrap; pointer-events: none;
    opacity: 0; transition: opacity .15s;
    box-shadow: var(--shadow);
    z-index: 1001;
}
.sidebar-collapsed .sb-link:hover::after { opacity: 1; }

/* Sidebar footer */
.sidebar-footer {
    border-top: 1px solid var(--sidebar-border);
    padding: 10px 12px;
    display: flex; flex-direction: column; gap: 2px;
    flex-shrink: 0;
}
.sidebar-collapsed .sidebar-footer { padding: 10px 4px; }

/* ═══════════════════════════════════════════════════════════
   CONTENT AREA
   ═══════════════════════════════════════════════════════════ */

.shell-content {
    margin-left: var(--sidebar-w);
    margin-top: var(--topbar-h);
    min-height: calc(100vh - var(--topbar-h));
    transition: margin-left .2s cubic-bezier(.4,0,.2,1);
    display: flex; flex-direction: column;
}

.sidebar-collapsed .shell-content {
    margin-left: var(--sidebar-w-collapsed);
}

.shell-content > .main-content {
    padding-top: 0 !important;
    flex: 1;
}

/* Override old navbar — hide it when sidebar is present */
body.has-sidebar > .navbar { display: none !important; }
body.has-sidebar > .main-content { padding-top: 0 !important; }

/* ═══════════════════════════════════════════════════════════
   DASHBOARD COMPONENTS
   ═══════════════════════════════════════════════════════════ */

/* Page header with breadcrumb */
.dash-page-header {
    padding: 20px 28px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
}
.dash-breadcrumb {
    display: flex; align-items: center; gap: 6px;
    font-size: .75rem; color: var(--text-muted);
    margin-bottom: 8px;
}
.dash-breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.dash-breadcrumb a:hover { color: var(--accent); }
.dash-breadcrumb-sep { color: var(--text-muted); }
.dash-title-row {
    display: flex; justify-content: space-between; align-items: flex-start;
    flex-wrap: wrap; gap: 12px;
}
.dash-title {
    font-size: 1.35rem; font-weight: 800; letter-spacing: -.02em;
    margin: 0; line-height: 1.2;
}
.dash-subtitle {
    font-size: .82rem; color: var(--text-secondary);
    margin: 2px 0 0;
}
.dash-actions {
    display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
}

/* Page body */
.dash-body {
    padding: 20px 28px 32px;
}

/* KPI Cards — improved with trend indicator */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px; margin-bottom: 24px;
}
.kpi-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 18px 20px;
    display: flex; flex-direction: column; gap: 4px;
    transition: border-color .15s;
    position: relative; overflow: hidden;
}
.kpi-card:hover { border-color: var(--accent); }
.kpi-card-label {
    font-size: .68rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .07em;
    color: var(--text-secondary);
}
.kpi-card-value {
    font-size: 1.8rem; font-weight: 900; letter-spacing: -.03em;
    line-height: 1; font-family: var(--font-mono);
}
.kpi-card-trend {
    display: flex; align-items: center; gap: 4px;
    font-size: .72rem; font-weight: 600;
}
.kpi-trend-up { color: var(--success); }
.kpi-trend-down { color: var(--danger); }
.kpi-trend-flat { color: var(--text-muted); }
.kpi-card-sparkline {
    position: absolute; bottom: 0; right: 0;
    width: 80px; height: 32px; opacity: .15;
}
.kpi-card-link {
    font-size: .72rem; color: var(--accent);
    text-decoration: none; margin-top: 4px;
}
.kpi-card-link:hover { text-decoration: underline; }

/* Panels */
.dash-panel {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; overflow: hidden;
}
.dash-panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.dash-panel-title {
    font-size: .82rem; font-weight: 700;
    display: flex; align-items: center; gap: 8px;
}
.dash-panel-title .panel-icon {
    font-size: 1rem; opacity: .7;
}
.dash-panel-badge {
    font-size: .65rem; font-weight: 700;
    padding: 2px 7px; border-radius: 10px;
    background: rgba(189,255,0,.12); color: var(--accent);
}
.dash-panel-action {
    font-size: .75rem; color: var(--accent);
    text-decoration: none; font-weight: 500;
}
.dash-panel-action:hover { text-decoration: underline; }
.dash-panel-body { padding: 14px 18px; }

/* Dashboard grid layouts */
.dash-grid-2 {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
    margin-bottom: 20px;
}
.dash-grid-3 {
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px;
    margin-bottom: 20px;
}
.dash-grid-main-side {
    display: grid; grid-template-columns: 1fr 360px; gap: 16px;
    margin-bottom: 20px;
}

/* List rows (used in panels) */
.dash-list-item {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; padding: 10px 18px;
    border-bottom: 1px solid var(--border);
    text-decoration: none; color: inherit;
    transition: background .1s;
}
.dash-list-item:last-child { border-bottom: none; }
.dash-list-item:hover { background: var(--sidebar-hover); }
a.dash-list-item { cursor: pointer; }
.dash-list-primary {
    display: flex; flex-direction: column; gap: 2px;
    min-width: 0; flex: 1;
}
.dash-list-title {
    font-size: .85rem; font-weight: 600;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.dash-list-sub {
    font-size: .73rem; color: var(--text-secondary);
}
.dash-list-meta {
    display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.dash-list-value {
    font-size: .85rem; font-weight: 700; color: var(--accent);
    font-family: var(--font-mono);
}

/* Activity feed */
.activity-feed { list-style: none; padding: 0; margin: 0; }
.activity-item {
    display: flex; gap: 12px; padding: 10px 18px;
    border-bottom: 1px solid var(--border);
    font-size: .82rem;
}
.activity-item:last-child { border-bottom: none; }
.activity-dot {
    flex-shrink: 0; width: 8px; height: 8px;
    border-radius: 50%; margin-top: 6px;
}
.activity-dot-green { background: var(--success); }
.activity-dot-blue { background: var(--info); }
.activity-dot-yellow { background: var(--warning); }
.activity-dot-red { background: var(--danger); }
.activity-content { flex: 1; min-width: 0; }
.activity-time {
    font-size: .7rem; color: var(--text-muted);
    flex-shrink: 0; margin-left: auto;
}

/* Quick action buttons (capability grid) */
.quick-actions {
    display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.quick-action-btn {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px;
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: 8px; cursor: pointer;
    text-decoration: none; color: inherit;
    transition: border-color .15s, background .15s;
}
.quick-action-btn:hover {
    border-color: var(--accent);
    background: rgba(189,255,0,.03);
}
.quick-action-icon {
    font-size: 1.2rem; flex-shrink: 0;
    width: 32px; height: 32px; border-radius: 8px;
    background: rgba(189,255,0,.08);
    display: flex; align-items: center; justify-content: center;
}
.quick-action-label {
    font-size: .82rem; font-weight: 600;
}
.quick-action-desc {
    font-size: .7rem; color: var(--text-secondary);
}

/* Overdue alert banner */
.alert-banner {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px; border-radius: 8px;
    font-size: .84rem; margin-bottom: 16px;
    flex-wrap: wrap;
}
.alert-banner-danger {
    background: rgba(248,81,73,.06);
    border: 1px solid rgba(248,81,73,.2);
    color: var(--danger);
}
.alert-banner-warning {
    background: rgba(210,153,34,.06);
    border: 1px solid rgba(210,153,34,.2);
    color: var(--warning);
}
.alert-banner-success {
    background: rgba(63,185,80,.06);
    border: 1px solid rgba(63,185,80,.2);
    color: var(--success);
}

/* ═══════════════════════════════════════════════════════════
   USER MENU DROPDOWN
   ═══════════════════════════════════════════════════════════ */

.user-menu {
    position: relative;
}
.user-menu-dropdown {
    display: none; position: absolute; top: calc(100% + 8px); right: 0;
    width: 220px; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 8px; box-shadow: var(--shadow-lg);
    z-index: 1100; overflow: hidden;
}
.user-menu.open .user-menu-dropdown { display: block; }
.user-menu-header {
    padding: 12px 14px; border-bottom: 1px solid var(--border);
}
.user-menu-name { font-size: .85rem; font-weight: 600; }
.user-menu-email { font-size: .72rem; color: var(--text-muted); }
.user-menu-item {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 14px; font-size: .82rem;
    color: var(--text-secondary); text-decoration: none;
    transition: all .1s; cursor: pointer;
    border: none; background: none; width: 100%; text-align: left;
}
.user-menu-item:hover { background: var(--sidebar-hover); color: var(--text-primary); }
.user-menu-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

/* Mobile overlay */
.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.5); z-index: 899;
    backdrop-filter: blur(2px);
}

@media (max-width: 1024px) {
    .dash-grid-3 { grid-template-columns: 1fr 1fr; }
    .dash-grid-main-side { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .shell-sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-w);
        z-index: 950;
    }
    .sidebar-open .shell-sidebar { transform: translateX(0); }
    .sidebar-open .sidebar-overlay { display: block; }

    .shell-content { margin-left: 0 !important; }
    .topbar-brand { width: auto; border-right: none; padding: 0 12px; }
    .sidebar-collapsed .topbar-brand { width: auto; }
    .topbar-brand-text { display: none; }
    .topbar-user-name { display: none; }

    .dash-body { padding: 16px; }
    .dash-page-header { padding: 16px; }
    .dash-grid-2 { grid-template-columns: 1fr; }
    .dash-grid-3 { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
    .quick-actions { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .kpi-grid { grid-template-columns: 1fr 1fr; }
    .kpi-card { padding: 14px; }
    .kpi-card-value { font-size: 1.4rem; }
}

/* ═══════════════════════════════════════════════════════════
   TRANSITIONS & POLISH
   ═══════════════════════════════════════════════════════════ */

/* Smooth content shift */
.shell-content, .shell-sidebar, .topbar-brand {
    will-change: width, margin-left, transform;
}

/* Hide old elements when sidebar is active */
body.has-sidebar .footer {
    margin-left: var(--sidebar-w);
    transition: margin-left .2s cubic-bezier(.4,0,.2,1);
}
body.has-sidebar.sidebar-collapsed .footer {
    margin-left: var(--sidebar-w-collapsed);
}
@media (max-width: 768px) {
    body.has-sidebar .footer { margin-left: 0 !important; }
}

/* Status dot for SABE/system health in sidebar */
.sb-status-dot {
    width: 6px; height: 6px; border-radius: 50%;
    flex-shrink: 0;
}
.sb-status-dot-green { background: var(--success); }
.sb-status-dot-yellow { background: var(--warning); }
.sb-status-dot-red { background: var(--danger); }

/* Progress micro-bar for sidebar items */
.sb-progress {
    height: 2px; border-radius: 1px;
    background: var(--sidebar-border);
    margin-top: 4px; overflow: hidden;
}
.sb-progress-fill {
    height: 100%; border-radius: 1px;
    background: var(--accent);
    transition: width .3s;
}