/* =============================================
   Publications chatbot widget
   Inherits Material Blue palette from styles.css
   ============================================= */

/* -----------------------------------------------------------
   Persistent side trigger — desktop pull-tab pinned to right
   ----------------------------------------------------------- */
.pc-side-tab {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(100%);
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--surface);
    background: var(--gradient-primary);
    border: none;
    border-radius: 8px 0 0 8px;
    box-shadow: -2px 4px 12px var(--shadow-medium);
    cursor: pointer;
    z-index: 900;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s,
                box-shadow 0.2s;
}

.pc-side-tab svg {
    width: 22px;
    height: 22px;
}

.pc-side-tab.pc-side-tab--visible {
    transform: translateY(-50%) translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.pc-side-tab:hover {
    transform: translateY(-50%) translateX(-4px);
    box-shadow: -4px 6px 16px var(--shadow-dark);
}

.pc-side-tab:active {
    transform: translateY(-50%) translateX(-2px);
}

@media (max-width: 767px) {
    .pc-side-tab { display: none !important; }
}

/* -----------------------------------------------------------
   Mobile FAB — phone-only, bottom-right, clears audio player
   ----------------------------------------------------------- */
.pc-fab {
    display: none;
    position: fixed;
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    width: 56px;
    height: 56px;
    align-items: center;
    justify-content: center;
    color: var(--surface);
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 12px var(--shadow-dark);
    cursor: pointer;
    z-index: 900;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.85);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s,
                box-shadow 0.2s;
}

.pc-fab svg {
    width: 26px;
    height: 26px;
}

@media (max-width: 767px) {
    .pc-fab {
        display: inline-flex;
    }
    .pc-fab.pc-fab--visible {
        opacity: 1;
        pointer-events: auto;
        transform: scale(1);
    }
    /* Lift FAB above sticky audio player when active */
    body.audio-player-visible .pc-fab {
        bottom: calc(96px + env(safe-area-inset-bottom, 0px));
    }
}

.pc-fab:active { transform: scale(0.94); }

/* Hide both triggers when drawer is open (keyboard-focusable elements
   inside an open dialog should not include the trigger that spawned it). */
body.pc-drawer-open .pc-side-tab,
body.pc-drawer-open .pc-fab {
    opacity: 0;
    pointer-events: none;
}

/* -----------------------------------------------------------
   Drawer overlay
   ----------------------------------------------------------- */
.pc-drawer {
    position: fixed;
    inset: 0;
    z-index: 1500;
    pointer-events: none;
}

.pc-drawer[hidden] { display: none; }

.pc-drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.18);
    opacity: 0;
    transition: opacity 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.pc-drawer-panel {
    position: absolute;
    top: 0;
    right: 0;
    height: 100vh;
    height: 100dvh;
    width: 420px;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    box-shadow: -4px 0 24px var(--shadow-dark);
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
}

.pc-drawer.pc-drawer--visible .pc-drawer-panel {
    transform: translateX(0);
}

.pc-drawer.pc-drawer--visible .pc-drawer-backdrop {
    opacity: 1;
    pointer-events: auto;
}

@media (max-width: 1023px) and (min-width: 768px) {
    .pc-drawer-panel {
        width: 60vw;
        min-width: 380px;
    }
}

@media (max-width: 767px) {
    .pc-drawer-panel {
        width: 100vw;
        box-shadow: none;
    }
    .pc-drawer-backdrop { display: none; }
}

body.pc-drawer-open {
    overflow: hidden;
}

/* -----------------------------------------------------------
   Drawer header — gradient bar with title + actions
   ----------------------------------------------------------- */
.pc-drawer-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 0.85rem 0.85rem 1.1rem;
    color: var(--surface);
    background: var(--gradient-primary);
    flex-shrink: 0;
}

.pc-drawer-title {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    margin: 0;
    flex: 1;
    min-width: 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--surface);
}

.pc-drawer-title svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.pc-drawer-title span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pc-drawer-actions {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    position: relative;
    flex-shrink: 0;
}

.pc-drawer-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--surface);
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.15s, opacity 0.15s;
}

.pc-drawer-icon-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.18);
}

.pc-drawer-icon-btn:focus-visible {
    outline: 2px solid var(--surface);
    outline-offset: 2px;
}

.pc-drawer-icon-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pc-drawer-icon-btn svg {
    width: 20px;
    height: 20px;
}

/* Download popover — anchors below the actions cluster */
.pc-download-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    box-shadow: 0 4px 16px var(--shadow-dark);
    overflow: hidden;
    z-index: 10;
}

.pc-download-menu[hidden] { display: none; }

.pc-download-menu button {
    display: block;
    width: 100%;
    padding: 0.65rem 0.9rem;
    font-family: inherit;
    font-size: 0.85rem;
    text-align: left;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.pc-download-menu button:hover {
    background: var(--hover-overlay);
    color: var(--primary);
}

.pc-download-menu button + button {
    border-top: 1px solid var(--border-light);
}

/* -----------------------------------------------------------
   Drawer body
   ----------------------------------------------------------- */
.pc-drawer-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0.9rem 1rem 1rem;
    overflow-y: auto;
    background: var(--surface);
}

.pc-hint {
    font-size: 0.72rem;
    color: var(--text-hint);
    margin-bottom: 0.55rem;
}

/* -----------------------------------------------------------
   Form, input, send (reused inside drawer)
   ----------------------------------------------------------- */
.pc-input-wrap {
    display: flex;
    gap: 0.5rem;
    margin: 0;
}

.pc-input {
    flex: 1;
    min-width: 0;
    padding: 0.6rem 0.85rem;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.pc-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--focus-overlay);
}

.pc-input:disabled {
    background: var(--background-alt);
    cursor: wait;
}

.pc-send {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--surface);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s, transform 0.05s;
}

.pc-send:hover:not(:disabled) { background: var(--primary-dark); }
.pc-send:active:not(:disabled) { transform: translateY(1px); }
.pc-send:disabled { opacity: 0.5; cursor: wait; }

.pc-suggestions {
    margin-top: 0.6rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.pc-suggestions button {
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: 16px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.pc-suggestions button:hover {
    background: var(--hover-overlay);
    border-color: var(--primary-light);
    color: var(--primary);
}

.pc-context {
    margin-top: 0.6rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--background-alt);
    border-radius: 4px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.pc-context code {
    padding: 0.1rem 0.4rem;
    font-size: 0.8rem;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 3px;
    color: var(--primary);
}

.pc-clear-context {
    margin-left: auto;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--primary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: underline;
}

/* Inside the drawer the thread fills remaining space rather than capping at 60vh */
.pc-thread {
    margin-top: 0.75rem;
    padding: 0.5rem;
    flex: 1;
    min-height: 200px;
    overflow-y: auto;
    background: var(--background-alt);
    border: 1px solid var(--border-light);
    border-radius: 6px;
}

.pc-msg {
    padding: 0.7rem 0.9rem;
    margin: 0.4rem 0;
    border-radius: 6px;
    line-height: 1.5;
    font-size: 0.95rem;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.pc-msg-user {
    background: rgba(var(--primary-rgb), 0.08);
    border-left: 3px solid var(--primary);
}

.pc-msg-assistant {
    background: var(--surface);
    border: 1px solid var(--border-light);
}

.pc-msg-note {
    background: transparent;
    color: var(--text-hint);
    font-size: 0.85rem;
    font-style: italic;
    text-align: center;
    padding: 0.4rem;
}

.pc-msg-loading {
    display: inline-flex;
    gap: 0.25rem;
    padding: 0.7rem 0.9rem;
    background: var(--surface);
    border: 1px solid var(--border-light);
}

.pc-dot {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pcDot 1.2s infinite ease-in-out;
}

.pc-dot:nth-child(2) { animation-delay: 0.15s; }
.pc-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes pcDot {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.85); }
    40%           { opacity: 1;   transform: scale(1); }
}

.pc-msg code {
    padding: 0.1rem 0.35rem;
    font-size: 0.85em;
    background: var(--background-alt);
    border-radius: 3px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.pc-msg pre {
    margin: 0.5rem 0;
    padding: 0.6rem 0.8rem;
    background: var(--background-alt);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.85em;
    line-height: 1.45;
}

.pc-msg pre code {
    padding: 0;
    background: transparent;
}

.pc-cites {
    margin-top: 0.6rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--border-light);
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
}

.pc-cite-chip {
    display: inline-block;
    max-width: 100%;
    padding: 0.25rem 0.7rem;
    font-size: 0.8rem;
    color: var(--surface);
    background: var(--primary);
    text-decoration: none;
    border-radius: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.15s;
}

.pc-cite-chip:hover { background: var(--primary-dark); }

.pc-bib-chip {
    padding: 0.25rem 0.7rem;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.pc-bib-chip:hover {
    background: var(--hover-overlay);
    border-color: var(--primary-light);
    color: var(--primary);
}

/* -----------------------------------------------------------
   Per-paper "Ask" pill — inside .pub-links alongside 32×32 round buttons
   ----------------------------------------------------------- */
.pc-ask-btn {
    height: 32px;
    padding: 0 0.7rem;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--surface);
    background: var(--primary);
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    flex-shrink: 0;
}

.pc-ask-btn:hover { background: var(--primary-dark); }

.pc-ask-icon {
    width: 14px;
    height: 14px;
}

.pc-quota {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-hint);
    text-align: right;
}

/* Highlight effect when a citation chip scrolls to its paper */
.publication-item.pc-highlight {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
    transition: outline 0.3s ease;
}

/* -----------------------------------------------------------
   Phone-specific drawer tweaks
   ----------------------------------------------------------- */
@media (max-width: 767px) {
    .pc-drawer-body { padding: 0.85rem 0.85rem 1rem; }
    .pc-suggestions button { font-size: 0.75rem; }
    .pc-cite-chip { max-width: 100%; }
    /* Use safe-area inset so the input doesn't sit on top of the iOS home indicator */
    .pc-drawer-panel { padding-bottom: env(safe-area-inset-bottom, 0px); }
}

@media (prefers-reduced-motion: reduce) {
    .publication-item.pc-highlight,
    .pc-send,
    .pc-suggestions button,
    .pc-bib-chip,
    .pc-ask-btn,
    .pc-cite-chip,
    .pc-input,
    .pc-side-tab,
    .pc-fab,
    .pc-drawer-panel,
    .pc-drawer-backdrop,
    .pc-drawer-icon-btn { transition: none; }
    .pc-dot { animation: none; opacity: 0.6; }
}