/* brain.css - Second Brain view styles */

.brain-tab {
    display: grid;
    gap: var(--spacing-lg);
}

.brain-header-card,
.brain-toolbar,
.brain-filter-collapse,
.capture-sheet-panel,
.brain-note-card,
.brain-info-popover {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.brain-header-card {
    position: relative;
    display: grid;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    overflow: visible;
}

.brain-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.55rem;
    margin-bottom: var(--spacing-xs);
}

.brain-subtitle-row {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.brain-subtitle {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.brain-info-btn {
    width: 28px;
    height: 28px;
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--accent-purple);
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.brain-info-btn:active { transform: scale(var(--interactive-press-scale)); }
.brain-info-btn:hover,
.brain-info-btn[aria-expanded="true"] {
    border-color: var(--accent-purple);
    background: var(--surface-strong);
}

.brain-info-popover {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: min(280px, calc(100vw - 56px));
    padding: 14px;
    border-radius: var(--radius-lg);
    z-index: 15;
}

.brain-info-text {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 8px;
}

.brain-info-link {
    font-size: 0.9rem;
}

.brain-inline-capture {
    display: grid;
    gap: var(--spacing-md);
    padding: 2px;
    border-radius: calc(var(--radius-xl) + 2px);
    background: var(--brain-capture-shell);
    box-shadow: 0 16px 36px rgba(179, 136, 255, 0.18);
}

.brain-inline-capture::before {
    content: '';
    display: block;
    position: absolute;
    inset: auto;
}

.brain-capture-input {
    width: 100%;
    min-height: 112px;
    border: none;
    border-radius: calc(var(--radius-xl) - 2px);
    background: var(--surface-elevated);
    color: var(--text-primary);
    padding: 16px 18px;
    resize: vertical;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.38);
}

.brain-capture-input:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px rgba(179, 136, 255, 0.22);
}

.brain-capture-input::placeholder {
    color: var(--text-muted);
}

.brain-inline-actions,
.brain-inline-submit-row,
.capture-sheet-actions,
.capture-sheet-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.brain-inline-actions {
    padding: 0 10px 10px;
    justify-content: space-between;
}

.brain-inline-categories,
.category-filter-bar,
.capture-sheet-categories {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
}

.brain-inline-categories::-webkit-scrollbar,
.category-filter-bar::-webkit-scrollbar,
.capture-sheet-categories::-webkit-scrollbar { display: none; }

.btn-pill,
.brain-upload-btn,
.brain-edit-upload-btn,
.category-pill,
.brain-sort-btn,
.brain-view-link,
.brain-inline-action,
.brain-menu-btn,
.brain-search-clear {
    border: 1px solid var(--glass-border);
    background: var(--surface-soft);
    color: var(--text-secondary);
    transition: transform 0.18s ease, border-color 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn-pill,
.brain-upload-btn,
.brain-edit-upload-btn,
.category-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--radius-pill);
    cursor: pointer;
    white-space: nowrap;
}

.category-pill strong {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.category-pill.active {
    background: linear-gradient(135deg, rgba(179, 136, 255, 0.16), rgba(244, 143, 177, 0.12));
    border-color: rgba(179, 136, 255, 0.4);
    color: var(--text-primary);
}

.category-picker.active {
    box-shadow: inset 0 0 0 1px rgba(179, 136, 255, 0.24);
}

.category-add-btn {
    min-width: 42px;
    justify-content: center;
    font-weight: 700;
}

.brain-inline-submit-row {
    margin-left: auto;
}

.brain-add-btn {
    min-width: 84px;
    box-shadow: none;
}

.brain-toolbar {
    padding: 12px;
    border-radius: var(--radius-xl);
}

.brain-search-bar-wrap { width: 100%; }

.brain-search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    background: var(--surface-strong);
    border-radius: var(--radius-pill);
    border: 1px solid var(--glass-border);
}

.brain-search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    padding: 14px 0;
}

.brain-search-bar input:focus { outline: none; }
.brain-search-clear {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    cursor: pointer;
}

.brain-filter-collapse {
    margin-bottom: 0;
    padding: 12px;
    border-radius: var(--radius-xl);
}

.brain-filter-group {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}

.brain-filter-label {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.brain-sort-toggle,
.brain-view-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.brain-sort-btn,
.brain-view-link,
.brain-inline-action,
.brain-menu-btn {
    border-radius: var(--radius-pill);
    cursor: pointer;
}

.brain-sort-btn,
.brain-view-link {
    padding: 10px 14px;
}

.brain-sort-btn.active,
.brain-view-link.active,
.brain-menu-btn.active {
    background: linear-gradient(135deg, rgba(179, 136, 255, 0.16), rgba(244, 143, 177, 0.1));
    color: var(--text-primary);
    border-color: rgba(179, 136, 255, 0.32);
}

.brain-sort-blue .brain-sort-btn.active {
    box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.16);
}

.brain-view-green .brain-view-link.active {
    box-shadow: inset 0 0 0 1px rgba(52, 211, 153, 0.16);
}

.filter-collapse {
    margin-bottom: var(--spacing-md);
}

.filter-collapse-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: 10px 14px;
    background: var(--surface-soft);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    cursor: pointer;
}

.filter-collapse-arrow {
    transition: transform 0.2s ease;
}

.filter-collapse.expanded .filter-collapse-arrow { transform: rotate(180deg); }

.filter-collapse-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
}

.filter-collapse.expanded .filter-collapse-content { max-height: 640px; }

.brain-notes-grid {
    display: grid;
    gap: var(--spacing-md);
}

.brain-notes-grid[data-stagger],
.brain-notes-grid {
    --dummy: 0;
}

.brain-note-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px;
    border-radius: var(--radius-xl);
    overflow: visible;
    border-color: color-mix(in srgb, var(--glass-border) 70%, var(--brain-category, var(--accent-purple)) 30%);
}

.brain-note-card::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    background: var(--brain-category, var(--accent-purple));
}

.brain-note-card-menu-open,
.brain-note-card:hover {
    box-shadow: var(--shadow-md);
}

.brain-note-top,
.brain-note-footer {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.brain-note-footer {
    margin-top: auto;
}

.brain-note-badges,
.brain-quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.brain-note-category,
.brain-pin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 30px;
    padding: 6px 10px;
    border-radius: var(--radius-pill);
    background: var(--surface-soft);
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.brain-pin {
    color: var(--text-primary);
}

.brain-note-text {
    margin: 0;
    color: var(--text-primary);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.brain-note-images,
.capture-sheet-attachments,
.brain-edit-attachments {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.brain-note-thumb,
.capture-sheet-attachments > div {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
    aspect-ratio: 1 / 1;
}

.brain-note-thumb img,
.capture-sheet-attachments img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.brain-note-footer > span {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.brain-inline-action {
    padding: 8px 12px;
    font-size: 0.82rem;
}

.brain-sm { padding-inline: 10px; }
.brain-inline-action.danger,
.brain-action-menu-item.danger { color: var(--accent-pink); }

.brain-menu-wrap {
    position: relative;
    margin-left: auto;
}

.brain-menu-btn {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
}

.brain-action-menu {
    position: absolute;
    right: 0;
    min-width: 220px;
    padding: 8px;
    border-radius: var(--radius-lg);
    background: var(--surface-elevated);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    z-index: 30;
}

.brain-action-menu.is-below { top: calc(100% + 8px); }
.brain-action-menu.is-above { bottom: calc(100% + 8px); }

.brain-action-menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: left;
}

.brain-action-menu-item:hover,
.brain-action-menu-item.selected {
    background: linear-gradient(135deg, rgba(179, 136, 255, 0.14), rgba(244, 143, 177, 0.1));
}

.brain-action-menu-divider {
    height: 1px;
    margin: 6px 0;
    background: var(--border-light);
}

.brain-action-menu-trailing {
    margin-left: auto;
    color: var(--text-muted);
}

.brain-cat-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-left: auto;
}

.brain-cat-icon {
    color: var(--menu-icon-color, var(--accent-purple));
    display: inline-flex;
}

.brain-lightbox {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    padding: var(--spacing-lg);
    background: var(--overlay-dark);
    z-index: 1000;
}

.brain-lightbox img {
    max-width: min(92vw, 720px);
    max-height: 72vh;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.brain-lightbox-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background: var(--surface-strong);
    color: var(--text-primary);
    cursor: pointer;
}

.brain-lightbox-counter,
.brain-lightbox-hint {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    border-radius: var(--radius-pill);
    background: rgba(0,0,0,0.24);
    color: var(--bg-secondary);
}

.brain-lightbox-counter { top: var(--spacing-lg); }
.brain-lightbox-hint { bottom: var(--spacing-lg); }

.brain-empty-state {
    background: var(--bg-card);
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius-xl);
}

.capture-sheet {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 250;
}

.capture-sheet.open { pointer-events: auto; }

.capture-sheet-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(45, 38, 64, 0.42);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.capture-sheet-panel {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    background: var(--surface-elevated);
    transform: translateY(100%);
    transition: transform 0.26s ease;
}

.capture-sheet.open .capture-sheet-backdrop { opacity: 1; }
.capture-sheet.open .capture-sheet-panel { transform: translateY(0); }

.capture-sheet-header h3 {
    font-size: 1.15rem;
    margin-bottom: 0;
}

.capture-sheet-count {
    text-align: right;
    color: var(--text-muted);
    font-size: 0.84rem;
    margin-top: 6px;
}

.capture-preview-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: var(--surface-overlay);
    color: var(--text-primary);
    cursor: pointer;
}

.archive-view .brain-note-card::before {
    background: linear-gradient(180deg, var(--accent-purple), var(--accent-pink));
}

.deleted-view .brain-note-card,
.recently-deleted-card {
    background: color-mix(in srgb, var(--bg-card) 84%, rgba(244, 143, 177, 0.1) 16%);
}

.brain-upload-pill input,
.brain-upload-btn input,
.brain-edit-upload-btn input,
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.brain-upload-pill,
.brain-upload-btn,
.brain-edit-upload-btn {
    position: relative;
}

.brain-upload-pill:hover,
.brain-upload-btn:hover,
.brain-edit-upload-btn:hover,
.category-pill:hover,
.brain-sort-btn:hover,
.brain-view-link:hover,
.brain-inline-action:hover,
.brain-menu-btn:hover,
.brain-search-clear:hover,
.filter-collapse-toggle:hover {
    border-color: rgba(179, 136, 255, 0.3);
    color: var(--text-primary);
    background: var(--surface-strong);
}

.brain-upload-pill:active,
.brain-upload-btn:active,
.brain-edit-upload-btn:active,
.category-pill:active,
.brain-sort-btn:active,
.brain-view-link:active,
.brain-inline-action:active,
.brain-menu-btn:active,
.brain-search-clear:active,
.filter-collapse-toggle:active {
    transform: scale(var(--interactive-press-scale));
}

html[data-theme="dark"] .brain-capture-input,
html[data-theme="oled"] .brain-capture-input {
    color: #2d2640;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: inset 0 0 0 1px rgba(179, 136, 255, 0.18);
}

html[data-theme="dark"] .brain-capture-input::placeholder,
html[data-theme="oled"] .brain-capture-input::placeholder {
    color: rgba(45, 38, 64, 0.48);
}

html[data-theme="dark"] .brain-capture-input:focus,
html[data-theme="oled"] .brain-capture-input:focus {
    box-shadow: inset 0 0 0 2px rgba(179, 136, 255, 0.32);
}

html[data-theme="dark"] .brain-inline-capture,
html[data-theme="oled"] .brain-inline-capture {
    box-shadow: 0 16px 40px rgba(179, 136, 255, 0.24);
}

@media (min-width: 768px) {
    .brain-header-card,
    .brain-toolbar,
    .brain-filter-collapse {
        padding: var(--spacing-xl);
    }

    .brain-notes-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .capture-sheet-panel {
        left: 50%;
        right: auto;
        width: min(720px, calc(100vw - 32px));
        transform: translate(-50%, 100%);
        border-radius: var(--radius-xl);
        bottom: var(--spacing-lg);
    }

    .capture-sheet.open .capture-sheet-panel {
        transform: translate(-50%, 0);
    }
}