/**
 * Shared application top shell header (BD-066).
 * Canonical chrome: accent strip + brand + view tabs + toolbar host + hamburger.
 * Same markup/styles on every primary v2 page (injected by app_shell_header.js).
 */

:root {
    --ln-app-shell-height: 44px;
    --ln-app-shell-accent: #4f9e90;
    --ln-app-shell-accent-bright: #7ec8e3;
    --ln-app-shell-accent-deep: #3a7a8c;
    /* Primary filled button (Board/Document + Add, etc.) */
    --ln-btn-primary: #667eea;
    --ln-btn-primary-hover: #5568d3;
    /* BD-117 — shared top-header icon button tokens */
    --ln-shell-icon-size: 32px;
    --ln-shell-icon-radius: 6px;
    --ln-shell-icon-color: #94a3b8;
    --ln-shell-icon-hover-bg: rgba(255, 255, 255, 0.1);
    --ln-shell-icon-hover-color: #e2e8f0;
    --ln-shell-icon-active-bg: rgba(255, 255, 255, 0.14);
    --ln-shell-icon-transition: background 0.15s ease, color 0.15s ease;
    /* BD-119 — per-icon hover accents (original trio + expanded palette) */
    --ln-shell-icon-hover-primary: #667eea;
    --ln-shell-icon-hover-secondary: #764ba2;
    --ln-shell-icon-hover-info: #06b6d4;
    --ln-shell-icon-hover-success: #059669;
    --ln-shell-icon-hover-accent: #10b981;
    --ln-shell-icon-hover-warning: #f59e0b;
    --ln-shell-icon-hover-error: #ef4444;
    --ln-shell-icon-hover-rose: #f43f5e;
    --ln-shell-icon-hover-violet: #a855f7;
}

.ln-app-shell-root {
    display: contents;
}

.notesai-top-accent {
    height: 1px;
    flex-shrink: 0;
    background: linear-gradient(
        90deg,
        var(--ln-app-shell-accent-deep) 0%,
        var(--ln-app-shell-accent) 28%,
        var(--ln-app-shell-accent-bright) 50%,
        var(--ln-app-shell-accent) 72%,
        var(--ln-app-shell-accent-deep) 100%
    );
    background-size: 200% 100%;
    animation: notesai-accent-breathe 9.5s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
    z-index: 10001;
}

@keyframes notesai-accent-breathe {
    0%,
    100% {
        background-position: 100% 50%;
        filter: brightness(0.72) saturate(0.88);
        opacity: 0.62;
    }
    50% {
        background-position: 0% 50%;
        filter: brightness(1.06) saturate(1.06);
        opacity: 1;
    }
}

.notesai-shell-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 12px;
    padding: 0 12px;
    height: var(--ln-app-shell-height);
    flex-shrink: 0;
    background: #1e293b;
    border-bottom: 1px solid #334155;
    z-index: 10000;
    box-sizing: border-box;
}

.notesai-shell-brand {
    font-size: 0.875rem;
    font-weight: 600;
    color: #f1f5f9;
    letter-spacing: 0.02em;
    justify-self: start;
    white-space: nowrap;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    text-decoration: none;
    cursor: pointer;
    border-radius: 4px;
    outline: none;
    transition: color 140ms ease, opacity 140ms ease, text-decoration-color 140ms ease;
}

a.notesai-shell-brand:hover,
a.notesai-shell-brand:focus-visible {
    color: #ffffff;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.45);
    text-underline-offset: 3px;
    opacity: 1;
}

a.notesai-shell-brand:focus-visible {
    box-shadow: 0 0 0 2px rgba(126, 200, 227, 0.55);
}

.notesai-shell-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    justify-self: center;
    min-width: 0;
}

.notesai-view-tabs {
    display: flex;
    gap: 4px;
    align-items: center;
    justify-self: center;
}

.notesai-view-tab {
    appearance: none;
    border: none;
    background: transparent;
    color: #94a3b8;
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    font-family: inherit;
}

.notesai-view-tab:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #e2e8f0;
}

.notesai-view-tab.is-active {
    background: rgba(102, 126, 234, 0.25);
    color: #e2e8f0;
}

.notesai-shell-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    justify-self: end;
}

.notesai-shell-nav {
    display: flex;
    align-items: center;
    min-width: 40px;
}

.notesai-shell-toolbar-host {
    display: flex;
    align-items: center;
}

.canvas-toolbar.notesai-header-toolbar {
    position: static;
    top: auto;
    right: auto;
    z-index: auto;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    gap: 2px;
}

.notesai-header-toolbar .toolbar-icon {
    width: var(--ln-shell-icon-size);
    height: var(--ln-shell-icon-size);
    border-radius: var(--ln-shell-icon-radius);
    color: var(--ln-shell-icon-color);
    background: transparent;
    transition: var(--ln-shell-icon-transition);
}

.notesai-header-toolbar .canvas-toolbar-zoom-label {
    min-width: 40px;
    height: var(--ln-shell-icon-size);
    padding: 0 6px;
    color: var(--ln-shell-icon-color);
    font-size: 11px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
    line-height: 1;
    border-radius: var(--ln-shell-icon-radius);
    transition: var(--ln-shell-icon-transition);
}

.notesai-header-toolbar .canvas-toolbar-zoom-label:hover,
.notesai-header-toolbar .canvas-toolbar-zoom-label.is-open {
    background: var(--ln-shell-icon-hover-bg);
    color: var(--ln-shell-icon-hover-color);
}

.notesai-header-toolbar .canvas-toolbar-zoom-menu {
    right: 0;
    left: auto;
}

/* BD-117/119: shared motion + per-icon hover colors (default muted → unique accent). */
.notesai-header-toolbar .toolbar-icon:hover,
.notesai-header-toolbar .toolbar-icon:focus-visible {
    background: var(--ln-shell-icon-hover-bg);
    color: var(--ln-shell-icon-hover-color);
    outline: none;
}

/* Original polished trio restored: drawing=secondary, agents=primary, sidebar=rose */
.notesai-header-toolbar .toolbar-icon.drawing-icon:hover,
.notesai-header-toolbar .toolbar-icon.drawing-icon:focus-visible {
    background: var(--ln-shell-icon-hover-secondary);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.agents-icon:hover,
.notesai-header-toolbar .toolbar-icon.agents-icon:focus-visible {
    background: var(--ln-shell-icon-hover-primary);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.sidebar-icon:hover,
.notesai-header-toolbar .toolbar-icon.sidebar-icon:focus-visible {
    background: var(--ln-shell-icon-hover-rose);
    color: #ffffff;
}

/* Expanded unique palette for remaining header icons (no adjacent duplicates).
   Visible order: agents → paint → today → page history → recent */
.notesai-header-toolbar .toolbar-icon.search-icon:hover,
.notesai-header-toolbar .toolbar-icon.search-icon:focus-visible {
    background: var(--ln-shell-icon-hover-accent);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.today-icon:hover,
.notesai-header-toolbar .toolbar-icon.today-icon:focus-visible {
    background: var(--ln-shell-icon-hover-warning);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.boards-icon:hover,
.notesai-header-toolbar .toolbar-icon.boards-icon:focus-visible {
    background: var(--ln-shell-icon-hover-rose);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.home-icon:hover,
.notesai-header-toolbar .toolbar-icon.home-icon:focus-visible {
    background: var(--ln-shell-icon-hover-primary);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.clear-icon:hover,
.notesai-header-toolbar .toolbar-icon.clear-icon:focus-visible {
    background: var(--ln-shell-icon-hover-error);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.history-icon:hover,
.notesai-header-toolbar .toolbar-icon.history-icon:focus-visible {
    background: var(--ln-shell-icon-hover-info);
    color: #ffffff;
}
.notesai-header-toolbar .toolbar-icon.save-icon:hover,
.notesai-header-toolbar .toolbar-icon.save-icon:focus-visible {
    background: var(--ln-shell-icon-hover-success);
    color: #ffffff;
}

.notesai-header-toolbar .toolbar-icon:active {
    filter: brightness(0.92);
}

.notesai-header-toolbar .toolbar-icon:disabled,
.notesai-header-toolbar .toolbar-icon[aria-disabled="true"],
.notesai-header-toolbar .toolbar-icon:disabled:hover,
.notesai-header-toolbar .toolbar-icon[aria-disabled="true"]:hover {
    opacity: 0.35;
    cursor: not-allowed;
    background: transparent;
    color: var(--ln-shell-icon-color);
    pointer-events: none;
    filter: none;
}

.notesai-header-toolbar .toolbar-icon i {
    font-size: 14px;
}

.notesai-header-toolbar .toolbar-icon.agents-icon .ln-agents-sparkles {
    width: 14px;
    height: 14px;
}

@media (max-width: 900px) {
    #notesaiCanvasToolbarHost .canvas-toolbar.notesai-header-toolbar {
        display: none;
    }

    .notesai-shell-header {
        padding: 0 8px;
    }

    .notesai-view-tab {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

.canvas-app-nav.ln-app-nav--notesai-header-toggle {
    position: static;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: visible;
    pointer-events: none;
    top: auto;
    right: auto;
    z-index: auto;
}

.canvas-app-nav.ln-app-nav--notesai-header-toggle .canvas-nav-panel {
    pointer-events: auto;
}

#lnNotesAiNavToggleHost .canvas-nav-toggle {
    position: relative;
    flex-shrink: 0;
    width: var(--ln-shell-icon-size);
    height: var(--ln-shell-icon-size);
    border: none;
    border-radius: var(--ln-shell-icon-radius);
    background: transparent;
    color: var(--ln-shell-icon-color);
    box-shadow: none;
    transition: var(--ln-shell-icon-transition);
}

#lnNotesAiNavToggleHost .canvas-nav-toggle:hover,
#lnNotesAiNavToggleHost .canvas-nav-toggle:focus-visible {
    background: var(--ln-shell-icon-hover-bg);
    color: var(--ln-shell-icon-hover-color);
    box-shadow: none;
    outline: none;
}

#lnNotesAiNavToggleHost .canvas-nav-toggle:active {
    background: var(--ln-shell-icon-active-bg);
    color: var(--ln-shell-icon-hover-color);
}

#lnNotesAiNavToggleHost .canvas-nav-toggle:disabled,
#lnNotesAiNavToggleHost .canvas-nav-toggle[aria-disabled="true"] {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
    background: transparent;
    color: var(--ln-shell-icon-color);
}

#lnNotesAiNavToggleHost .canvas-nav-toggle svg {
    width: 16px;
    height: 16px;
}

/* BD-068: shared shell is flush to the viewport on every page.
   Cancel page chrome (e.g. .app-page padding) that was insetting the
   header and making it look detached from the layout edge. */
body.ln-has-app-shell {
    margin: 0;
    padding-top: 0;
    padding-left: 0;
    padding-right: 0;
    box-sizing: border-box;
}

body.ln-has-app-shell.app-page {
    /* layout.css .app-page adds 16px/10px padding — that inset the shell */
    padding-top: 0;
    padding-left: 0;
    padding-right: 0;
}

body.ln-has-app-shell:not(.notesai-workspace) {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.ln-has-app-shell:not(.notesai-workspace) > .notesai-top-accent,
body.ln-has-app-shell:not(.notesai-workspace) > .notesai-shell-header {
    flex-shrink: 0;
    width: 100%;
    max-width: none;
    margin: 0;
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    align-self: stretch;
    box-sizing: border-box;
}

/* Content below the shell fills remaining height (matches notesai column). */
body.ln-has-app-shell:not(.notesai-workspace) > *:not(.notesai-top-accent):not(.notesai-shell-header) {
    flex: 1 1 auto;
    min-width: 0;
}

/* Hamburger nav + backdrop are fixed overlays appended to body — never flex-grow
   siblings of the page shell (BD-087: short canvas band when they stole height). */
body.ln-has-app-shell > .canvas-app-nav,
body.ln-has-app-shell > #canvasNavBackdrop,
body.ln-has-app-shell > .canvas-nav-backdrop {
    flex: none !important;
}

/* Full-viewport shells: fill height under the shared header */
body.ln-has-app-shell.data-view-page,
body.ln-has-app-shell.ln-shell-fill {
    height: 100vh;
    max-height: 100vh;
    overflow: hidden;
}

body.ln-has-app-shell.data-view-page > .data-view-shell,
body.ln-has-app-shell.ln-shell-fill > .exp-page,
body.ln-has-app-shell.ln-shell-fill > .cb-shell,
body.ln-has-app-shell.ln-shell-fill > .bubble-page {
    flex: 1 1 0;
    min-height: 0;
    width: 100%;
    max-width: none;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
}

/* Page content keeps its own horizontal rhythm; shell stays edge-to-edge */
body.ln-has-app-shell.settings-page .dashboard-container,
body.ln-has-app-shell.today-page .td-shell {
    padding-top: 24px;
}

body.ln-has-app-shell.today-page .td-shell {
    padding-top: 16px;
}

@media (max-width: 768px) {
    body.ln-has-app-shell.app-page {
        padding-top: 0;
        padding-left: 0;
        padding-right: 0;
    }
}

/* Beat page CSS that re-insets full-bleed shells under the shared header */
@media (max-width: 700px) {
    body.ln-has-app-shell.data-view-page > .data-view-shell {
        margin: 0;
        border-radius: 0;
    }
}

/* ── Views menu (BD-070) — after Calendar in the shared header center ── */
.ln-views-menu {
    position: relative;
    flex-shrink: 0;
}

.ln-views-menu-toggle {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--ln-shell-icon-size);
    height: var(--ln-shell-icon-size);
    padding: 0;
    border: none;
    border-radius: var(--ln-shell-icon-radius);
    background: transparent;
    color: var(--ln-shell-icon-color);
    cursor: pointer;
    transition: var(--ln-shell-icon-transition);
}

.ln-views-menu-toggle:hover,
.ln-views-menu-toggle:focus-visible,
.ln-views-menu.is-open .ln-views-menu-toggle {
    background: var(--ln-shell-icon-hover-violet);
    color: #fff;
    outline: none;
}

.ln-views-menu-toggle:active {
    background: #9333ea;
    color: #fff;
}

.ln-views-menu-toggle[aria-expanded="true"] {
    background: rgba(168, 85, 247, 0.35);
    color: #f3e8ff;
}

.ln-views-menu-toggle:disabled,
.ln-views-menu-toggle[aria-disabled="true"] {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
    background: transparent;
    color: var(--ln-shell-icon-color);
}

.ln-views-menu-icon {
    display: block;
}

.ln-views-menu-panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    padding: 6px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 8px;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.45);
    z-index: 10020;
}

.ln-views-menu-item {
    position: relative;
}

.ln-views-menu-parent,
.ln-views-menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 8px 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #e2e8f0;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    box-sizing: border-box;
    text-align: left;
}

.ln-views-menu-parent:hover,
.ln-views-menu-link:hover {
    background: rgba(255, 255, 255, 0.06);
}

.ln-views-menu-caret {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1;
}

.ln-views-flyout {
    position: absolute;
    top: 0;
    left: calc(100% + 4px);
    min-width: 188px;
    max-width: 280px;
    max-height: min(70vh, 420px);
    overflow-y: auto;
    padding: 6px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 8px;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.45);
    z-index: 10021;
}

.ln-views-flyout-empty {
    padding: 8px 10px;
    color: #94a3b8;
    font-size: 0.75rem;
    line-height: 1.35;
}

.ln-views-flyout-divider {
    height: 1px;
    margin: 6px 4px;
    background: #334155;
}

.ln-views-menu-link--create {
    color: #7ec8e3;
    font-weight: 600;
}

.ln-views-menu-link--create:hover {
    background: rgba(126, 200, 227, 0.1);
}

@media (max-width: 720px) {
    .ln-views-flyout {
        left: auto;
        right: 0;
        top: calc(100% + 2px);
    }

    .ln-views-menu-panel {
        left: auto;
        right: 0;
        transform: none;
    }
}