/* ==========================================================================
   TalkWithMe — Dark theme chat UI
   ========================================================================== */

/* --------------------------------------------------------------------------
   Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --bg-input: #1a1a3e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --bubble-user: #0f3460;
    --bubble-ai: #16213e;
    --border-color: #2a2a4e;
    --sidebar-width: 310px;
    --topbar-height: 52px;
    --radius: 12px;
}

body[data-theme="light"] {
    --bg-primary: #f5f7fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9eef7;
    --bg-input: #ffffff;
    --text-primary: #1d2433;
    --text-secondary: #445067;
    --text-muted: #6f7d97;
    --accent: #2f6fed;
    --accent-hover: #4d85f2;
    --bubble-user: #d9e6ff;
    --bubble-ai: #ffffff;
    --border-color: #ccd6e6;
}

body[data-theme="matrix"] {
    --bg-primary: #020b03;
    --bg-secondary: #041706;
    --bg-tertiary: #0a260d;
    --bg-input: #041706;
    --text-primary: #9dff9d;
    --text-secondary: #71cf71;
    --text-muted: #4b9b4b;
    --accent: #35ff6c;
    --accent-hover: #6eff95;
    --bubble-user: #0a2a10;
    --bubble-ai: #08220d;
    --border-color: #1f5f2f;
}

body[data-theme="blues"] {
    --bg-primary: #0a1f3f;
    --bg-secondary: #102c57;
    --bg-tertiary: #1a3d73;
    --bg-input: #15325f;
    --text-primary: #edf6ff;
    --text-secondary: #bfd8f7;
    --text-muted: #8eb0db;
    --accent: #66b3ff;
    --accent-hover: #8cc8ff;
    --bubble-user: #174073;
    --bubble-ai: #12335e;
    --border-color: #2a4f82;
}

html, body {
    height: 100%;
    /* Same dynamic-viewport correction as #main-layout: on iOS Safari a
       percentage height resolves against the toolbar-less viewport. */
    height: 100dvh;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    /* Stops the whole page rubber-banding when a scroll gesture reaches the
       end of the transcript, which on iOS drags the fixed chrome around. */
    overscroll-behavior: none;
}

/*
 * Generic show/hide utility. JS toggles the "hidden" class on modal
 * overlays, error banners, and the list/form views inside the persona and
 * chat room editors. The !important is load-bearing, not decoration:
 * #pe-list-view and #pe-form-view set their layout via ID selectors, and
 * an ID rule would out-specify a plain .hidden rule and defeat it.
 */
.hidden {
    display: none !important;
}

/* --------------------------------------------------------------------------
   Top bar
   -------------------------------------------------------------------------- */
#topbar {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: 10;
}

#topbar h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.5px;
}

.topbar-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.topbar-actions button {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.15s, border-color 0.15s;
}

.topbar-actions button:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.theme-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

#theme-select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 0.82rem;
}

#theme-select:focus {
    outline: 1px solid var(--accent);
    outline-offset: 1px;
}

.icon-btn {
    font-size: 1.1rem !important;
    padding: 6px 10px !important;
}

/*
 * No cross glyph. The icon itself already swaps between a loudspeaker and a
 * muted loudspeaker, so appending a ❌ put two symbols in one button and made
 * the muted state read as an error rather than a state.
 */
#tts-icon.muted {
    opacity: 0.55;
}

/* Skip button: dimmed and unclickable when there is no audio to skip. */
#btn-tts-skip:disabled {
    opacity: 0.35;
    cursor: default;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
#main-layout {
    display: flex;
    /*
     * 100vh is a lie in mobile Safari: it measures the viewport as if the
     * address bar and toolbar were hidden, so with them on screen the layout
     * runs taller than what you can actually see and the composer is pushed
     * under the bottom bar. Hiding the toolbar, or installing to the home
     * screen, removes the chrome and makes 100vh accidentally correct - which
     * is exactly the reported symptom.
     *
     * dvh tracks the *dynamic* viewport, shrinking and growing as the chrome
     * slides in and out. The vh rule stays first as the fallback for browsers
     * that do not understand dvh.
     */
    height: calc(100vh - var(--topbar-height));
    height: calc(100dvh - var(--topbar-height));
}

/* --------------------------------------------------------------------------
    Sidebar
    -------------------------------------------------------------------------- */
#sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#sidebar h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 8px;
}

/* Chat room selector dropdown */
#chat-room-selector {
    margin-bottom: 4px;
}

#chat-room-dropdown {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 0.85rem;
    width: 100%;
    cursor: pointer;
    outline: none;
    transition: border-color 0.15s;
}

#chat-room-dropdown:focus {
    border-color: var(--accent);
}

/* "Add persona" button in sidebar */
.btn-add-persona {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.8rem;
    cursor: pointer;
    width: 100%;
    text-align: center;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn-add-persona:hover {
    background: var(--accent);
    border-color: var(--accent);
    border-style: solid;
    color: #fff;
}

/* Remove persona "x" button on persona cards */
.persona-remove-btn {
    background: transparent;
    border: none;
    color: #e74c3c;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
    opacity: 0.5;
}

.persona-remove-btn:hover {
    background: rgba(231, 76, 60, 0.2);
    opacity: 1;
}

/* Who-chooser */
#who-chooser {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chooser-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s;
    font-size: 0.9rem;
}

.chooser-option:hover {
    background: var(--bg-tertiary);
}

.chooser-option input[type="radio"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

/* Echo chamber checkbox — styled to match the who-chooser radio buttons */
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s;
    font-size: 0.9rem;
    user-select: none;
}

.checkbox-option:hover {
    background: var(--bg-tertiary);
}

.checkbox-option input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.checkbox-option input[type="checkbox"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Persona list */
#persona-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
}

.persona-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border: 2px solid transparent;
}

.persona-card:hover {
    background: var(--bg-tertiary);
}

.persona-card.selected {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
}

.persona-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.persona-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* Mute indicator for non-TTS personas */
.persona-avatar .mute-indicator {
    position: absolute;
    bottom: -1px;
    right: -1px;
    font-size: 0.65rem;
    background: var(--bg-primary);
    border-radius: 50%;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.persona-info {
    flex: 1;
    min-width: 0;
}

.persona-name {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.persona-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   Chat panel
   -------------------------------------------------------------------------- */
#chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

#messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Scrollbar styling */
#messages::-webkit-scrollbar,
#sidebar::-webkit-scrollbar,
.pe-list::-webkit-scrollbar {
    width: 6px;
}

#messages::-webkit-scrollbar-thumb,
#sidebar::-webkit-scrollbar-thumb,
.pe-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* --------------------------------------------------------------------------
   Chat bubbles
   -------------------------------------------------------------------------- */
.message-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    max-width: 80%;
}

.message-row.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-row.assistant {
    align-self: flex-start;
    align-items: flex-start; /* Top-align avatar with bubble, not bottom */
    gap: 12px;               /* Wider gap to match the larger avatar */
}

.bubble-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: #fff;
    flex-shrink: 0;
    overflow: hidden;
}

.bubble-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.bubble-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.bubble-name {
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 0 4px;
    font-weight: 600;
}

.bubble {
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 0.92rem;
    line-height: 1.5;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message-row.user .bubble {
    background: var(--bubble-user);
    border-bottom-right-radius: 4px;
}

.message-row.assistant .bubble {
    background: var(--bubble-ai);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

/* Tool-call chips — display-only indicators of MCP tool invocations.
   They live in .bubble-content (not inside .bubble) because streaming
   tokens rewrite bubble.textContent, which would destroy child elements. */
.tool-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 4px;
}

.tool-chip {
    font-size: 0.7rem;
    line-height: 1.4;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: default;
    user-select: none;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tool-chip.error {
    color: #ff6b6b;
    border-color: #ff6b6b;
}

/* Loading indicator */
.loading-bubble {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    align-items: center;
}

.loading-bubble span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: pulse 1.2s infinite ease-in-out;
}

.loading-bubble span:nth-child(2) { animation-delay: 0.2s; }
.loading-bubble span:nth-child(3) { animation-delay: 0.4s; }

@keyframes pulse {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

/* --------------------------------------------------------------------------
   Input bar
   -------------------------------------------------------------------------- */
#input-bar {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    padding: 14px 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    /* Keeps the composer clear of the home indicator once the page is
       allowed under the rounded corners by viewport-fit=cover. Falls back
       to the plain padding wherever the env() is unknown or zero. */
    padding-bottom: calc(14px + env(safe-area-inset-bottom, 0px));
    flex-shrink: 0;
}

#message-input {
    flex: 1;
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.92rem;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    outline: none;
    transition: border-color 0.15s;
    line-height: 1.4;
}

#message-input:focus {
    border-color: var(--accent);
}

#message-input::placeholder {
    color: var(--text-muted);
}

#btn-send {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, transform 0.1s;
    flex-shrink: 0;
}

#btn-send:hover {
    background: var(--accent-hover);
}

#btn-send:active {
    transform: scale(0.95);
}

#btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#btn-mic {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, border-color 0.15s;
    flex-shrink: 0;
}

#btn-mic:hover {
    background: var(--accent);
    border-color: var(--accent);
}

#btn-mic.recording {
    background: var(--accent);
    border-color: var(--accent);
    animation: mic-pulse 1s infinite ease-in-out;
}

#btn-mic:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* Transcribing: disabled, but it must not read as "unavailable" the way the
   plain disabled state does - work is happening, so keep it bright and spin. */
#btn-mic.transcribing,
#btn-mic.transcribing:disabled {
    opacity: 1;
    cursor: progress;
    background: var(--bg-tertiary);
    border-color: var(--accent);
}

/* Spin the glyph only: rotating the button drags its border and background
   round with it, which reads as the whole control tumbling. */
#btn-mic .mic-icon {
    display: inline-block;
    line-height: 1;
}

#btn-mic.transcribing .mic-icon {
    animation: mic-spin 1.1s linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
    #btn-mic.transcribing .mic-icon,
    #btn-mic.recording {
        animation: none;
    }
}

@keyframes mic-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* --------------------------------------------------------------------------
   Empty state
   -------------------------------------------------------------------------- */
.empty-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    text-align: center;
    padding: 40px;
}

.empty-state p {
    margin-bottom: 8px;
}

.empty-state .hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Persona Editor Modal
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-box-sm {
    max-width: 400px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn-icon-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    line-height: 1;
    transition: color 0.15s, background 0.15s;
}

.btn-icon-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-accent:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: #c0392b;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-danger:hover {
    background: #e74c3c;
}

/* Persona editor list view — constrained so the list scrolls within the modal */
#pe-list-view {
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow: hidden;
}

/* Persona editor list — capped so the form view (shown in-place during edit) has room */
.pe-list {
    overflow-y: auto;
    padding: 12px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 60px;
    max-height: 45vh;
}

.pe-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.pe-list-item-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    flex-shrink: 0;
    overflow: hidden;
}

.pe-list-item-info {
    flex: 1;
    min-width: 0;
}

.pe-list-item-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.pe-list-item-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pe-list-item-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.pe-list-item-actions button {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 4px 10px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.pe-list-item-actions button:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.pe-list-item-actions button.btn-delete:hover {
    background: #c0392b;
    border-color: #c0392b;
}

.pe-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 24px 0;
}

/* Persona editor form — constrained so long forms scroll within the modal */
#pe-form-view {
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow: hidden;
}

#pe-form {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-row label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.required {
    color: var(--accent);
}

.field-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Persona editor — file fields (avatar image, reference audio) */
.pf-file-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pf-file-preview {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    overflow: hidden;
    flex-shrink: 0;
    color: var(--text-muted);
    font-weight: 700;
}

.pf-file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pf-file-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    min-width: 0;
}

.pf-file-status {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 240px;
}

.btn-small {
    padding: 3px 10px;
    font-size: 0.75rem;
}

.form-row input[type="file"] {
    color: var(--text-secondary);
    font-size: 0.78rem;
    max-width: 100%;
}

.form-row input[type="text"],
.form-row textarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 0.88rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
    resize: vertical;
}

.form-row input[type="text"]:focus,
.form-row textarea:focus {
    border-color: var(--accent);
}

/* Read-only fields — slightly muted, no focus ring */
.form-row input.form-input-readonly {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    cursor: default;
}

.form-row input.form-input-readonly:focus {
    border-color: var(--border-color);
}

.form-row input[type="color"] {
    width: 48px;
    height: 34px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-input);
    cursor: pointer;
    padding: 2px;
}

.form-row-inline {
    flex-direction: row;
    gap: 20px;
    align-items: flex-start;
}

.form-col {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.pe-form-error {
    background: rgba(192, 57, 43, 0.18);
    color: #e74c3c;
    border: 1px solid #c0392b;
    border-radius: 6px;
    padding: 8px 14px;
    font-size: 0.85rem;
    margin: 0 20px 0 20px;
}

.pe-confirm-msg {
    padding: 16px 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Settings Modal
   ========================================================================== */

#settings-form {
    display: flex;
    flex-direction: column;
}

.settings-body {
    padding: 16px 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 65vh;
}

/* Fieldset sections */
.settings-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.settings-section legend {
    padding: 0 6px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: default;
}

/* Settings fields container (shown/hidden based on toggle) */
.settings-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.settings-fields.disabled {
    opacity: 0.35;
    pointer-events: none;
}

/* Toggle switch (for TTS/STT enable/disable) */
.settings-toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.settings-toggle {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.settings-toggle-slider {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
    background: var(--border-color);
    border-radius: 10px;
    transition: background 0.2s;
    flex-shrink: 0;
}

.settings-toggle-slider::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: transform 0.2s, background 0.2s;
}

.settings-toggle:checked + .settings-toggle-slider {
    background: var(--accent);
}

.settings-toggle:checked + .settings-toggle-slider::after {
    transform: translateX(16px);
    background: #fff;
}

.settings-toggle-text {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Styled checkbox (for streaming toggle) */
.settings-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    user-select: none;
}

.settings-checkbox-label input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Number input styling for settings */
.settings-body .form-row input[type="number"] {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 0.88rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
    width: 100%;
}

.settings-body .form-row input[type="number"]:focus {
    border-color: var(--accent);
}

/* Remove spinner arrows from number inputs */
.settings-body input[type="number"]::-webkit-inner-spin-button,
.settings-body input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.settings-body input[type="number"] {
    -moz-appearance: textfield;
}

/* ==========================================================================
   Chat Rooms Editor Modal
   ========================================================================== */

.cr-list {
    overflow-y: auto;
    padding: 12px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 60px;
    max-height: 50vh;
}

.cr-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.cr-list-item-name {
    flex: 1;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cr-list-item-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.cr-list-item-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: color 0.15s, background 0.15s;
    flex-shrink: 0;
}

.cr-list-item-delete:hover {
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.15);
}

.cr-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 24px 0;
}

/* ==========================================================================
   Persona Picker Modal (for adding to chat rooms)
   ========================================================================== */

.pp-list {
    overflow-y: auto;
    padding: 12px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 60px;
    max-height: 50vh;
}

.pp-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    border: 1px solid transparent;
}

.pp-list-item:hover {
    background: var(--bg-tertiary);
}

.pp-list-item.selected {
    background: var(--bg-tertiary);
    border-color: var(--accent);
}

.pp-list-item-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    color: #fff;
    flex-shrink: 0;
}

.pp-list-item-info {
    flex: 1;
    min-width: 0;
}

.pp-list-item-name {
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pp-list-item-desc {
    font-size: 0.72rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Custom checkbox for persona picker */
.pp-checkbox {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    cursor: pointer;
}

.pp-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 24px 0;
}

/* ==========================================================================
   Message audio playback (persisted chat)
   ========================================================================== */

/* Wrapper for user messages — keeps bubble + audio stacked vertically
   despite the row using flex-direction: row-reverse. */
.user-message-content {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.message-audio {
    display: flex;
    gap: 6px;
    margin-top: 6px;
    flex-wrap: wrap;
}

.audio-play-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    /* Roomier than the original 3px/8px: these now carry an icon plus a
       segment number, and the old box clipped the pair together. */
    padding: 4px 9px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, opacity 0.15s;
    line-height: 1.2;
    /* Tabular digits stop the row from jiggling as numbers change width. */
    font-variant-numeric: tabular-nums;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.audio-play-btn:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.audio-play-btn:active {
    transform: scale(0.95);
}

/* A failed reply. Kept inside the bubble so it stays attached to the persona
   that failed, but visually separated so it is not mistaken for their words. */
.bubble-error {
    margin-top: 6px;
    padding: 6px 10px;
    border-left: 3px solid #e5484d;
    border-radius: 4px;
    background: rgba(229, 72, 77, 0.12);
    color: #ff9ea1;
    font-size: 0.85rem;
    line-height: 1.35;
    white-space: normal;
}

/* No top margin when the error is the only thing in the bubble - otherwise a
   reply that produced no text at all renders with a blank gap above it. */
.bubble.has-error:empty .bubble-error,
.bubble.has-error > .bubble-error:first-child {
    margin-top: 0;
}

/* The header skip control while a clip is audible: it stops that clip, so
   it should read as active rather than as a passive "next" button. */
.icon-btn.is-playing {
    color: var(--accent);
    animation: audio-pulse 1.2s ease-in-out infinite;
}

/* The glyph spins on its own so the chunk number beside it stays upright. */
.audio-btn-icon {
    display: inline-block;
    line-height: 1;
}

.audio-play-btn.is-processing .audio-btn-icon {
    animation: mic-spin 1.1s linear infinite;
}

/* Synthesis in progress is work, not unavailability: keep it legible rather
   than dimming it to the same 0.5 as a merely-queued chunk. */
.audio-play-btn.is-processing,
.audio-play-btn.is-processing:disabled {
    opacity: 1;
    border-color: var(--accent);
    cursor: progress;
}

@media (prefers-reduced-motion: reduce) {
    .audio-play-btn.is-processing .audio-btn-icon {
        animation: none;
    }
}

/* A pending chunk is not clickable, and should not look it. */
.audio-play-btn:disabled {
    opacity: 0.5;
    cursor: default;
}

.audio-play-btn:disabled:hover {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

/* The chunk you are hearing right now, so it is obvious which button the
   skip applies to when several are lined up. */
.audio-play-btn.is-playing {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    animation: audio-pulse 1.2s ease-in-out infinite;
}

@keyframes audio-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.65; }
}

/* --------------------------------------------------------------------------
   Mobile
   --------------------------------------------------------------------------
   The layout is a two-column desktop app: a fixed 310px sidebar beside the
   chat, and a top bar of eight labelled buttons. Neither survives a phone —
   the sidebar leaves almost nothing for the transcript, and the buttons wrap
   into several rows that eat the viewport.

   Below the breakpoint the sidebar becomes a slide-over drawer and the top
   bar scrolls sideways, so the chat keeps the whole screen.
   -------------------------------------------------------------------------- */

/* The drawer toggle is meaningless while the sidebar is a permanent column. */
#btn-sidebar {
    display: none;
}

@media (max-width: 820px) {
    #btn-sidebar {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--bg-tertiary);
        color: var(--text-primary);
        border: 1px solid var(--border-color);
        border-radius: 6px;
        cursor: pointer;
        flex-shrink: 0;
    }

    #topbar {
        gap: 10px;
        padding: 0 10px;
        /* Clear of the notch in landscape, where the inset is on the sides. */
        padding-left: max(10px, env(safe-area-inset-left));
        padding-right: max(10px, env(safe-area-inset-right));
    }

    /* The title is the first thing worth sacrificing: the drawer button and
       the audio controls both have to stay reachable. */
    #topbar h1 {
        font-size: 1rem;
        flex-shrink: 0;
    }

    /*
     * Scroll the actions sideways rather than wrapping them. Wrapping grew
     * the bar to three rows and pushed the composer off the bottom of the
     * screen - the overflow that made the app unusable in Safari.
     */
    .topbar-actions {
        flex: 1;
        min-width: 0;
        overflow-x: auto;
        overflow-y: hidden;
        /*
         * flex-start, not flex-end. With the items right-aligned, anything
         * that overflows spills off the LEFT edge, and an overflow container
         * cannot be scrolled backwards past its start - so the first buttons
         * became permanently unreachable instead of merely off-screen.
         */
        justify-content: flex-start;
        gap: 6px;
        padding: 6px 0;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }

    .topbar-actions::-webkit-scrollbar {
        display: none;
    }

    /*
     * The word "Theme" costs more room than it earns, but hiding it outright
     * left a bare dropdown as the only control in the bar with no glyph.
     * Swap the text for an icon instead: the <label for> association survives,
     * so tapping it still focuses the select.
     */
    .theme-label {
        font-size: 0;
        flex-shrink: 0;
        cursor: pointer;
        line-height: 1;
    }

    .theme-label::before {
        content: "\1F3A8";  /* 🎨 */
        font-size: 1.05rem;
    }

    /* Just wide enough for the colour name, matching the icon buttons. */
    #theme-select {
        flex-shrink: 0;
        max-width: 92px;
        padding: 7px 6px;
        font-size: 0.78rem;
    }

    /*
     * Icons only. Eight labelled buttons need roughly 700px of bar; the
     * glyphs alone fit a phone without scrolling, and every button keeps its
     * title and aria-label so the meaning is not lost.
     */
    .btn-label {
        display: none;
    }

    .topbar-actions button {
        flex-shrink: 0;
        font-size: 1.05rem;
        line-height: 1;
        padding: 8px 9px;
        min-width: 38px;
    }

    /*
     * The drawer. Fixed rather than absolute so it is measured against the
     * viewport, not against #main-layout - which is itself shorter than the
     * screen on iOS while the toolbar is showing.
     */
    #sidebar {
        position: fixed;
        top: var(--topbar-height);
        left: 0;
        bottom: 0;
        z-index: 30;
        width: min(300px, 85vw);
        min-width: 0;
        transform: translateX(-100%);
        transition: transform 0.22s ease;
        box-shadow: 2px 0 16px rgba(0, 0, 0, 0.45);
        padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    }

    #sidebar.open {
        transform: translateX(0);
    }

    #sidebar-backdrop {
        position: fixed;
        top: var(--topbar-height);
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 20;
        background: rgba(0, 0, 0, 0.5);
    }

    /* A bubble capped at 80% of a phone screen wastes the margin it leaves. */
    .message-row {
        max-width: 94%;
    }

    #messages {
        padding: 14px 12px;
        gap: 10px;
    }

    #input-bar {
        padding: 10px 12px;
        padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
        gap: 8px;
    }

    /*
     * 16px exactly. Safari zooms the whole page in when a focused input has
     * text smaller than that, and it does not zoom back out on blur - so a
     * single tap on the composer left the app permanently magnified and
     * scrolled sideways.
     */
    #message-input {
        font-size: 16px;
    }

    /* Comfortable touch targets: 40px is below the ~44px both platforms
       recommend, and these sit next to each other. */
    #btn-mic,
    #btn-send {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
    }

    /* Modals were sized for a desktop window; on a phone they should simply
       take the screen. */
    .modal-overlay {
        padding: 0;
    }

    .modal-box,
    .modal-box-sm {
        max-width: 100%;
        width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
        border: none;
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }
}

@media (max-width: 480px) {
    #topbar h1 {
        /* Below this width the title is competing with the controls for
           space it cannot win. */
        display: none;
    }
}