/* cbio-kb chat styles — scoped under .chat-container so they never leak into
   the broader Quarto wiki. Colors inherit Cosmo's Bootstrap 5 CSS variables. */

/* Suppress page-level scroll on the chat page so the inner scroll
   regions (messages, context feed) are the only scrollers. Also hide
   Quarto's auto-generated "Ask" title block — the chat UI is its own
   header. Scoped via `:has()` so other wiki pages keep their titles. */
body:has(.chat-container) {
    overflow: hidden;
}
body:has(.chat-container) #title-block-header,
body:has(.chat-container) .nav-footer,
body:has(.chat-container) > footer {
    display: none;
}

/* Chat panel — pinned to the viewport between the Quarto navbar and
   the bottom, so no amount of Quarto's default padding or title-block
   sizing can push it off-screen. The navbar is `fixed-top` at ~56px;
   we anchor below it. Using `position: fixed` bypasses #quarto-content
   and main.content padding entirely, so other wiki pages are
   untouched. */
.chat-container {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    overflow: hidden;
    min-height: 480px;
    z-index: 1;
}

.chat-container .chat-panel {
    flex: 6;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--bs-border-color);
}

.chat-container .messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.chat-container .msg {
    padding: 10px 14px;
    margin-bottom: 12px;
    border-radius: 8px;
    line-height: 1.5;
    word-wrap: break-word;
    font-size: 14px;
}

.chat-container .msg.user {
    max-width: 80%;
    background: var(--bs-primary);
    color: #fff;
    margin-left: auto;
    border-bottom-right-radius: 2px;
    white-space: pre-wrap;
}

/* Assistant messages span the full chat column so markdown elements
   (headings, lists, paragraphs) lay out naturally. Subtle background
   keeps them distinct from the user-message pills. */
.chat-container .msg.assistant {
    max-width: 100%;
    background: var(--bs-tertiary-bg);
    margin-right: auto;
    border-bottom-left-radius: 2px;
}

.chat-container .msg.assistant > *:first-child {
    margin-top: 0;
}

.chat-container .msg.assistant > *:last-child {
    margin-bottom: 0;
}

.chat-container .msg.assistant p {
    margin: 0 0 0.6em 0;
}

.chat-container .msg.assistant ul,
.chat-container .msg.assistant ol {
    margin: 0 0 0.6em 1.2em;
    padding: 0;
}

.chat-container .msg.assistant a {
    color: var(--bs-primary);
    text-decoration: underline;
}

.chat-container #chat-form {
    padding: 12px 20px;
    border-top: 1px solid var(--bs-border-color);
}

.chat-container .chat-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.chat-container .mode-toggle {
    padding: 10px 8px;
    border: 1px solid var(--bs-border-color);
    border-radius: 6px;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-size: 13px;
    cursor: pointer;
    flex-shrink: 0;
}

.chat-container #user-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--bs-border-color);
    border-radius: 6px;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-size: 14px;
    outline: none;
}

.chat-container #user-input:focus {
    border-color: var(--bs-primary);
}

.chat-container #send-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    background: var(--bs-primary);
    color: white;
    font-size: 14px;
    cursor: pointer;
}

.chat-container #send-btn:hover {
    background: var(--bs-secondary-bg);
}

.chat-container #send-btn:disabled {
    background: var(--bs-secondary-bg);
    cursor: not-allowed;
}

/* Glass panel */
/* Base glass-panel: flex/display/overflow are set in the desktop
   media query (with !important to override offcanvas). Only keep
   properties that apply at both breakpoints. */
.chat-container .glass-panel {
    background: var(--bs-body-bg);
}

.chat-container .context-feed {
    flex: 1;
    overflow-y: auto;
    padding: 0 12px 12px 12px;
    min-height: 0;
}

.chat-container .context-total {
    font-weight: 400;
    font-size: 11px;
    color: var(--bs-primary);
    text-transform: none;
    letter-spacing: 0;
    font-family: "SF Mono", "Fira Code", monospace;
}

.chat-container .empty-state {
    color: var(--bs-tertiary-color);
    font-size: 13px;
    text-align: center;
    padding: 40px 20px;
}

/* Context stack — the context window being built for this turn */
.chat-container .context-card {
    background: var(--bs-tertiary-bg);
    border-left: 3px solid var(--bs-primary);
    border-radius: 4px;
    padding: 8px 10px;
    margin-bottom: 8px;
    font-size: 12px;
    animation: fadeIn 0.2s ease-in;
}

.chat-container .context-card.context-pending {
    border-left-color: var(--bs-secondary-color);
    background: var(--bs-body-bg);
    border-style: dashed;
    border-left-style: solid;
    opacity: 0.75;
}

.chat-container .context-card.context-user {
    border-left-color: var(--bs-primary);
}

.chat-container .context-card.context-system {
    border-left-color: var(--bs-secondary);
}

.chat-container .context-card.context-assistant {
    border-left-color: var(--bs-info);
}

.chat-container .context-card.context-pruned {
    opacity: 0.5;
}

.chat-container .context-card.context-pruned .context-body {
    font-style: italic;
    color: var(--bs-secondary-color);
}

.chat-container .context-card.context-pruned .context-tokens {
    color: var(--bs-secondary-color);
}

/* Context card bodies are collapsed by default — click the header to
   expand. The caret icon rotates to indicate the state. */
.chat-container .context-body.context-collapsed {
    max-height: 1.4em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-container .context-caret {
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 14px;
    font-weight: 700;
    color: var(--bs-body-color);
    flex-shrink: 0;
    width: 14px;
    text-align: center;
    user-select: none;
}

.chat-container .context-card-header {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}

.chat-container .context-card-header:hover {
    background: var(--bs-secondary-bg);
    border-radius: 3px;
}

.chat-container .context-card-header:hover .context-caret {
    color: var(--bs-primary);
}

.chat-container .context-summary {
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 10px;
    color: var(--bs-body-color);
    background: var(--bs-light);
    padding: 1px 6px;
    border-radius: 3px;
    flex-shrink: 0;
}

.chat-container .context-card.tool-search { border-left-color: var(--bs-warning); }
.chat-container .context-card.tool-read_page { border-left-color: var(--bs-success); }
.chat-container .context-card.tool-read_section { border-left-color: var(--bs-success); }
.chat-container .context-card.tool-follow_links { border-left-color: var(--bs-danger); }
.chat-container .context-card.tool-find_references { border-left-color: var(--bs-danger); }
.chat-container .context-card.tool-get_page_metadata { border-left-color: var(--bs-info); }
.chat-container .context-card.tool-list_pages { border-left-color: var(--bs-secondary); }

.chat-container .context-icon {
    font-size: 14px;
}

.chat-container .context-kind {
    font-weight: 600;
    color: var(--bs-body-color);
    font-family: "SF Mono", "Fira Code", monospace;
}

.chat-container .context-tokens {
    margin-left: auto;
    font-size: 10px;
    color: var(--bs-primary);
    font-family: "SF Mono", "Fira Code", monospace;
    background: var(--bs-light);
    padding: 1px 6px;
    border-radius: 3px;
    flex-shrink: 0;
}

.chat-container .context-args {
    color: var(--bs-secondary-color);
    font-family: "SF Mono", "Fira Code", monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    flex: 1;
}

.chat-container .context-body {
    color: var(--bs-body-color);
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 11px;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.4;
}

.chat-container .context-tool-preview {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    white-space: normal;
}

.chat-container .subtitle {
    font-size: 13px;
    color: var(--bs-secondary-color);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Cold-start indicator ─────────────────────────────────────────────
   Shown inside the assistant bubble while we wait for the first SSE
   event (Cloud Run cold-start, initial SSE handshake). Hidden as soon
   as any event arrives. */

.chat-container .cold-start {
    text-align: center;
    padding: 24px 0 16px;
    perspective: 400px;
}

.chat-container .dna-helix {
    display: inline-block;
    margin: 0;
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 15px;
    line-height: 1.1;
    color: var(--bs-primary);
    letter-spacing: 2px;
    transform-style: preserve-3d;
    animation: dna-rotate 2.2s linear infinite;
}

@keyframes dna-rotate {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.chat-container .cold-start-label {
    margin: 14px 0 0 0;
    font-size: 12px;
    font-family: "SF Mono", "Fira Code", monospace;
    color: var(--bs-secondary-color);
    letter-spacing: 1px;
    text-transform: lowercase;
    animation: cold-start-pulse 1.6s ease-in-out infinite;
}

@keyframes cold-start-pulse {
    0%, 100% { opacity: 0.45; }
    50%      { opacity: 1; }
}

/* ─── Streaming thinking cursor ────────────────────────────────────────
   A blinking block cursor appended to the assistant bubble while text
   is streaming in. Removed on the `done` event. */

.chat-container .streaming-cursor {
    display: inline-block;
    width: 0.6em;
    height: 1em;
    margin-left: 2px;
    background: var(--bs-primary);
    vertical-align: text-bottom;
    animation: cursor-blink 1s steps(2, start) infinite;
}

@keyframes cursor-blink {
    to { visibility: hidden; }
}

/* Scrollbar styling */
.chat-container ::-webkit-scrollbar {
    width: 6px;
}
.chat-container ::-webkit-scrollbar-track {
    background: transparent;
}
.chat-container ::-webkit-scrollbar-thumb {
    background: var(--bs-border-color);
    border-radius: 3px;
}

/* ─── Drawer toggle (mobile FAB) ─────────────────────────────────── */
.chat-container .drawer-toggle {
    display: none;
}

@media (max-width: 991.98px) {
    .chat-container .drawer-toggle {
        display: flex;
        align-items: center;
        gap: 6px;
        position: fixed;
        bottom: 76px;
        right: 12px;
        z-index: 1040;
        background: var(--bs-primary);
        color: #fff;
        border: none;
        border-radius: 999px;
        padding: 8px 16px;
        font-size: 13px;
        font-weight: 600;
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        min-height: 44px;
    }

    .chat-container .drawer-toggle-badge {
        font-size: 11px;
        font-family: "SF Mono", "Fira Code", monospace;
        opacity: 0.85;
    }
}

/* ─── Desktop: offcanvas → static side panel ─────────────────────── */
@media (min-width: 992px) {
    .chat-container .glass-panel.offcanvas {
        position: static !important;
        transform: none !important;
        visibility: visible !important;
        flex: 4;
        display: flex !important;
        flex-direction: column;
        background: var(--bs-body-bg);
        overflow: hidden;
        border-left: none;
        height: auto !important;
        transition: none !important;
    }

    .chat-container .drawer-handle { display: none; }
    .chat-container .drawer-maximize { display: none; }

    .chat-container .drawer-tabs {
        padding: 12px 16px 0;
    }
}

/* ─── Mobile layout ──────────────────────────────────────────────── */
@media (max-width: 991.98px) {
    .chat-container {
        flex-direction: column;
    }

    .chat-container .chat-panel {
        flex: 1;
        border-right: none;
    }

    .chat-container #chat-form {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1030;
        background: var(--bs-body-bg);
        border-top: 1px solid var(--bs-border-color);
        padding: 10px 12px;
    }

    .chat-container .messages {
        padding-bottom: 72px;
    }

    .chat-container #user-input {
        font-size: 16px;
        min-height: 44px;
        padding: 10px 14px;
    }

    .chat-container #send-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 10px 16px;
        font-size: 16px;
    }

    .chat-container .glass-panel.offcanvas-bottom {
        /* Default height; JS overrides via inline style when user drags
           or taps maximize. Cleared on hidden.bs.offcanvas so reopen
           returns to 60vh. */
        height: 60vh;
        max-height: 95vh;
        border-top-left-radius: 12px;
        border-top-right-radius: 12px;
    }

    .chat-container .drawer-maximize {
        margin-left: auto;
        background: none;
        border: none;
        color: var(--bs-secondary-color);
        padding: 0 14px;
        font-size: 18px;
        line-height: 1;
        cursor: pointer;
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .chat-container .drawer-maximize:hover {
        color: var(--bs-body-color);
    }

    .chat-container .drawer-handle {
        width: 100%;
        height: 24px;
        margin: 0;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        cursor: grab;
        touch-action: none;
        user-select: none;
        -webkit-user-select: none;
    }

    .chat-container .drawer-handle::before {
        content: '';
        display: block;
        width: 36px;
        height: 4px;
        background: var(--bs-secondary-bg);
        border-radius: 2px;
    }

    .chat-container .drawer-handle:active {
        cursor: grabbing;
    }

    .chat-container .drawer-handle:active::before {
        background: var(--bs-secondary-color);
    }

    .chat-container .drawer-tabs {
        padding: 0 12px;
    }
}

/* ─── Drawer tabs & panes (shared across breakpoints) ────────────── */
.chat-container .drawer-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--bs-border-color);
    flex-shrink: 0;
}

.chat-container .drawer-panes {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.chat-container .drawer-pane {
    display: none;
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.chat-container .drawer-pane.active {
    display: flex;
    flex-direction: column;
}

/* ─── Drawer tab buttons ─────────────────────────────────────────── */
.chat-container .drawer-tab {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--bs-secondary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
}

.chat-container .drawer-tab.active {
    color: var(--bs-primary);
    border-bottom-color: var(--bs-primary);
}

.chat-container .drawer-tab:hover {
    color: var(--bs-body-color);
}

.chat-container .drawer-tab-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    min-width: 28px;
    margin-left: 6px;
    border-radius: 50%;
    font-size: 14px;
    color: var(--bs-secondary-color);
    cursor: pointer;
    user-select: none;
    line-height: 1;
}

.chat-container .drawer-tab-info:hover,
.chat-container .drawer-tab-info:focus-visible {
    background: var(--bs-secondary-bg);
    color: var(--bs-primary);
    outline: none;
}

.chat-container .drawer-tab-info[aria-expanded="true"] {
    background: var(--bs-secondary-bg);
    color: var(--bs-primary);
}

.chat-container .drawer-info-panel {
    padding: 10px 14px;
    border-bottom: 1px solid var(--bs-border-color);
    border-left: 3px solid var(--bs-info);
    background: var(--bs-tertiary-bg);
    font-size: 12px;
    line-height: 1.45;
    color: var(--bs-body-color);
    flex-shrink: 0;
}

.chat-container .drawer-info-panel p {
    margin: 0;
}

@media (max-width: 991.98px) {
    .chat-container .drawer-tab-info {
        width: 44px;
        height: 44px;
        min-width: 44px;
        font-size: 16px;
    }
    .chat-container .drawer-info-panel {
        padding: 8px 12px;
    }
}