@import url("fonts/fonts.css");

:root {
    --bg: #f6f4fb;
    --bg-card: #ffffff;
    --bg-soft: #f3eafe;
    --bg-soft-2: #ebe0fb;
    --fg: #1f1d2b;
    --fg-muted: #6b6781;
    --brand: #7c3aed;
    --brand-soft: #a78bfa;
    --brand-dark: #5b21b6;
    --accent: #8b5cf6;
    --hint: #b07a1a;
    --hint-bg: #fff7e0;
    --hint-border: #f1d98a;
    --danger: #dc2626;
    --ok: #16a34a;
    --border: #e7e3f1;
    --border-strong: #d8d1ea;
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 6px 24px rgba(74, 39, 154, 0.06);
    --shadow-strong: 0 12px 32px rgba(74, 39, 154, 0.12);
    --font-sans: "SB Sans Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", sans-serif;
    --font-display: "SB Sans Display", "SB Sans Text", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: "SB Sans Mono", ui-monospace, "SF Mono", Consolas, monospace;
    --sidebar-w: 64px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }
body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--fg);
    min-height: 100vh;
}
code { font-family: var(--font-mono); font-size: 0.9em; }
.muted { color: var(--fg-muted); }

.hero-title,
.section-title,
.program-card-title,
h1, h2, h3 {
    font-family: var(--font-display);
}

/* ---------- Sidebar ---------- */
.sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    gap: 18px;
    z-index: 20;
}
.sidebar-burger {
    width: 40px; height: 40px;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    color: var(--fg);
    display: grid; place-items: center;
}
.sidebar-burger:hover { background: var(--bg-soft); }
.sidebar-burger svg { width: 22px; height: 22px; }

.sidebar-nav {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}
.sidebar-item {
    width: 44px; height: 44px;
    border-radius: 14px;
    background: var(--bg-soft);
    color: var(--brand);
    display: grid; place-items: center;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, transform 0.15s;
}
.sidebar-item svg { width: 22px; height: 22px; }
.sidebar-item:hover { background: var(--bg-soft-2); }
.sidebar-item.is-active { background: var(--brand); color: #fff; }
.sidebar-item--accent { background: #ffe9d6; color: #d97706; }
.sidebar-item--accent:hover { background: #ffd9b5; }

/* ---------- Page shell ---------- */
.page {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------- Topbar ---------- */
.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: transparent;
}
.topbar-catalog {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--fg);
    font-weight: 600;
    font-size: 16px;
    padding: 6px 10px;
    border-radius: 12px;
    transition: background 0.15s;
}
.topbar-catalog:hover { background: var(--bg-soft); }
.topbar-catalog-icon {
    width: 28px; height: 28px;
    display: grid; place-items: center;
    color: var(--brand);
}
.topbar-catalog-icon svg { width: 22px; height: 22px; }

.topbar-spacer { flex: 1; }

.topbar-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    display: grid; place-items: center;
    color: var(--fg);
    text-decoration: none;
    transition: background 0.15s;
}
.topbar-icon:hover { background: var(--bg-soft); }
.topbar-icon svg { width: 22px; height: 22px; }

.back-row {
    padding: 0 28px 4px;
}
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--fg);
    font-weight: 500;
    text-decoration: none;
    padding: 6px 8px;
    border-radius: 10px;
}
.back-link:hover { background: var(--bg-soft); }
.back-link svg { width: 18px; height: 18px; }

/* ---------- Content ---------- */
.content {
    flex: 1;
    padding: 8px 28px 200px;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
}

/* ---------- Hero card ---------- */
.hero-card {
    position: relative;
    background: var(--bg-soft);
    border-radius: 24px;
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 240px;
    overflow: hidden;
}
.hero-text { flex: 1; }
.hero-title {
    margin: 0 0 16px;
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--fg);
}
.hero-subtitle {
    margin: 0;
    font-size: 18px;
    line-height: 1.45;
    color: var(--fg);
    opacity: 0.85;
}

.hero-avatar {
    position: relative;
    width: 260px; height: 260px;
    flex-shrink: 0;
    display: grid; place-items: center;
}
.hero-avatar-circle {
    width: 220px; height: 220px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c4b5fd 0%, #ddd6fe 60%, #fbcfe8 100%);
    border: 8px solid #ffffff;
    box-shadow: var(--shadow-strong);
    display: grid; place-items: center;
    color: var(--brand);
    overflow: hidden;
}
.hero-avatar-circle svg { width: 60%; height: 60%; }
.hero-avatar-circle--with-svg .avatar-mini {
    width: 100%; height: 100%;
    object-fit: cover;
    transform: translateY(8%) scale(1.05);
}
.hero-exit {
    position: absolute;
    top: 8px; right: 8px;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: #fff;
    box-shadow: var(--shadow);
    display: grid; place-items: center;
    color: var(--fg);
    text-decoration: none;
    transition: transform 0.15s;
}
.hero-exit:hover { transform: scale(1.05); }
.hero-exit svg { width: 20px; height: 20px; }

/* ---------- Section title ---------- */
.section-title {
    margin: 36px 0 20px;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.2;
    color: var(--fg);
}

/* ---------- Program cards ---------- */
.program-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 20px;
}
@media (max-width: 900px) {
    .program-grid { grid-template-columns: 1fr; }
}

.program-card {
    background: var(--bg-soft);
    border-radius: 24px;
    padding: 24px;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.program-card--feature { min-height: 360px; }

.badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 8px;
    width: fit-content;
}
.badge-primary { background: var(--brand); color: #fff; }

.program-card-title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--fg);
}

.program-card-media {
    flex: 1;
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    min-height: 260px;
    box-shadow: inset 0 0 0 1px var(--border);
}
.presentation-embed { width: 100%; height: 100%; min-height: 260px; border: 0; }
.presentation-fallback {
    padding: 24px;
    text-align: center;
    color: var(--fg-muted);
}

/* ---------- Avatar block (existing FSM hook) ---------- */
.avatar-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    flex: 1;
}
.avatar-frame {
    width: 100%;
    max-width: 260px;
    aspect-ratio: 1 / 1;
    border-radius: 24px;
    background: linear-gradient(135deg, #ddd6fe 0%, #fbcfe8 100%);
    overflow: hidden;
    display: grid; place-items: center;
    box-shadow: var(--shadow);
}
.avatar-svg { width: 100%; height: 100%; display: block; }
.status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--fg-muted);
}
.status .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--brand-soft);
}
.avatar-block[data-speaking="true"] .status .dot {
    background: var(--ok);
    animation: pulse 1s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ---------- Welcome form ---------- */
.start-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.field-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--fg-muted);
}
.field select,
.field input[type="text"] {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-strong);
    background: #fff;
    font-size: 15px;
    color: var(--fg);
    font-family: inherit;
}
.field select:focus,
.field input:focus {
    outline: 2px solid var(--brand-soft);
    outline-offset: 1px;
    border-color: var(--brand);
}
.form-hint {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--fg-muted);
    line-height: 1.5;
}

.resume-block {
    background: var(--hint-bg);
    border: 1px solid var(--hint-border);
    border-radius: 14px;
    padding: 14px 16px;
    color: var(--hint);
    margin-bottom: 8px;
}
.resume-block p { margin: 0 0 10px; }
.resume-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.welcome-avatar {
    object-fit: cover;
    width: 135%;
    text-align: center;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: 12px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, transform 0.1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
    background: var(--brand);
    color: #fff;
}
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost {
    background: #fff;
    color: var(--fg);
    border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-soft); }
.btn-wide { width: 100%; padding: 14px; font-size: 15px; }
.btn-sm { padding: 8px 12px; font-size: 13px; }

.btn-rec {
    transition: 0.25s;
    background-color: #dc2626 !important;
    color: #f6f4fb !important;
}

/* ---------- Session info ---------- */
.session-info {
    margin-top: 24px;
    padding: 12px 16px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    font-size: 13px;
    color: var(--fg-muted);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}
.session-info code { color: var(--fg); }

/* ---------- Chat dock ---------- */
.chat-dock {
    position: sticky;
    bottom: 16px;
    margin: 0 28px 16px calc(var(--sidebar-w) + 28px);
    background: #fff;
    border: 2px solid var(--brand-soft);
    border-radius: 24px;
    box-shadow: var(--shadow-strong);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 60vh;
    max-width: 1044px;
    z-index: 10;
}
.chat-dock-header {
    display: flex;
    align-items: center;
    gap: 8px;
}
.chat-dock-title {
    font-size: 14px;
    color: var(--fg-muted);
    font-weight: 500;
}

.chat-log {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    max-height: 28vh;
}
.chat-msg {
    position: relative;
    max-width: 90%;
    padding: 12px 14px;
    border-radius: 16px;
    font-size: 15px;
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
}
.chat-msg--bot {
    background: #eef0ff;
    color: var(--fg);
    border-bottom-left-radius: 6px;
    align-self: flex-start;
    padding-bottom: 36px; /* место под TTS-кнопки в правом нижнем углу */
}
.chat-msg--user {
    background: var(--brand);
    color: #fff;
    border-bottom-right-radius: 6px;
    align-self: flex-end;
}
.chat-msg--system {
    background: var(--hint-bg);
    color: var(--hint);
    align-self: center;
    font-size: 13px;
    font-style: italic;
}

.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.quick-actions:empty { display: none; }
.quick-actions button {
    padding: 8px 14px;
    border-radius: 20px;
    border: 1px solid var(--border-strong);
    background: #fff;
    color: var(--fg);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.quick-actions button:hover { background: var(--bg-soft); }

/* ---------- Composer ---------- */
.composer {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-soft);
    border-radius: 16px;
    padding: 6px 6px 6px 16px;
}
#composer-input {
    flex: 1;
    border: 0;
    background: transparent;
    font-size: 15px;
    font-family: inherit;
    padding: 10px 0;
    color: var(--fg);
    outline: none;
}
#composer-input::placeholder { color: var(--fg-muted); }

.composer button {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 0;
    background: transparent;
    color: var(--fg);
    display: grid; place-items: center;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.composer button svg { width: 20px; height: 20px; }
.composer button:hover { background: rgba(124, 58, 237, 0.12); }

#composer-send {
    background: var(--brand);
    color: #fff;
}
#composer-send:hover { background: var(--brand-dark); }

#btn-mic[aria-pressed="true"] {
    background: var(--danger);
    color: #fff;
}

.debug {
    background: #1a1726;
    color: #d6d3e4;
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 12px;
}
.debug summary { cursor: pointer; color: #a78bfa; }
.debug pre {
    margin: 8px 0 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 200px;
    overflow-y: auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
    :root { --sidebar-w: 56px; }
    .content { padding: 8px 16px 220px; }
    .hero-card { flex-direction: column; padding: 24px; text-align: center; }
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 15px; }
    .hero-avatar { width: 180px; height: 180px; }
    .hero-avatar-circle { width: 160px; height: 160px; }
    .section-title { font-size: 22px; }
    .chat-dock {
        margin: 0 12px 12px calc(var(--sidebar-w) + 12px);
        border-radius: 18px;
        padding: 12px;
    }
}

/* ===========================================================
   Страница сессии: PDF на весь фон + центральное окно чата
   =========================================================== */

.session-body { overflow: hidden; }

.page--session {
    position: relative;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    padding: 0;
}

/* ---------- PDF-фон ---------- */
.pdf-bg {
    position: fixed;
    inset: 0 0 0 var(--sidebar-w);
    background: #2a2438;
    z-index: 0;
}
.pdf-bg-embed {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}
.pdf-bg-fallback {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: #fff;
    text-align: center;
    padding: 24px;
}
.pdf-bg-fallback .muted { color: rgba(255, 255, 255, 0.7); }

/* ---------- Плавающая верхняя панель ---------- */
.session-topbar {
    position: fixed;
    top: 16px;
    left: calc(var(--sidebar-w) + 16px);
    right: 16px;
    z-index: 15;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.session-topbar__back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    color: var(--fg);
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 10px;
    transition: background 0.15s;
}
.session-topbar__back:hover { background: var(--bg-soft); }
.session-topbar__back svg { width: 18px; height: 18px; }
.session-topbar__info {
    flex: 1;
    font-size: 13px;
    color: var(--fg-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.session-topbar__info code { color: var(--fg); }
.session-topbar__actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

/* ---------- Скрытый аватар (только аудио + defs) ---------- */
.avatar-hidden { position: absolute; left: -9999px; }

/* ---------- Центральное окно чата (draggable + resizable) ---------- */
.chat-dock--center {
    position: fixed;
    /* стартовая позиция — задаётся JS, эти значения подстраховка */
    top: 80px;
    left: calc(var(--sidebar-w) + 40px);
    width: min(640px, calc(100vw - var(--sidebar-w) - 48px));
    height: min(720px, calc(100vh - 120px));
    min-width: 320px;
    min-height: 320px;
    max-width: calc(100vw - var(--sidebar-w) - 16px);
    max-height: calc(100vh - 24px);
    transform: none;
    margin: 0;
    z-index: 12;
    background: #fff;
    border: 2px solid var(--brand-soft);
    border-radius: 24px;
    box-shadow: 0 24px 64px rgba(74, 39, 154, 0.28);
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
}
.chat-dock--center.is-dragging,
.chat-dock--center.is-resizing {
    user-select: none;
    transition: none;
}

.chat-dock--center .chat-dock-header {
    cursor: move;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-soft);
    border-top-left-radius: 22px;
    border-top-right-radius: 22px;
        user-select: none;
    touch-action: none;
}
.chat-dock--center .chat-dock-header:active { cursor: grabbing; }
.chat-dock-grip {
    color: var(--fg-muted);
    font-size: 14px;
    letter-spacing: -2px;
    line-height: 1;
}
.chat-dock--center .chat-dock-title { flex: 1; }
.chat-dock-reset {
    border: 0;
    background: transparent;
    color: var(--fg-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    border-radius: 8px;
    line-height: 1;
}
.chat-dock-reset:hover { background: var(--bg-soft-2); color: var(--brand); }

.chat-dock--center .chat-log {
    flex: 1;
    max-height: none;
    min-height: 80px;
    padding: 14px 18px;
    margin: 0;
}
.chat-dock--center .quick-actions { padding: 0 18px; }
.chat-dock--center .quick-actions:not(:empty) { padding: 8px 18px 0; }
.chat-dock--center .composer { margin: 12px 14px 14px; }
.chat-dock--center .debug { margin: 0 14px 14px; }

.chat-dock-resize {
    position: absolute;
    right: 4px;
    bottom: 4px;
    width: 18px;
    height: 18px;
    cursor: nwse-resize;
    touch-action: none;
    background:
        linear-gradient(135deg,
            transparent 0 40%,
            var(--brand-soft) 40% 50%,
            transparent 50% 65%,
            var(--brand-soft) 65% 75%,
            transparent 75% 100%);
    border-bottom-right-radius: 22px;
    z-index: 2;
}

/* ---------- Адаптив ---------- */
@media (max-width: 720px) {
    .chat-dock--center {
        left: 8px !important;
        top: auto !important;
        bottom: 8px;
        width: calc(100vw - 16px) !important;
        height: 60vh !important;
        border-radius: 18px;
    }
    .chat-dock-resize { display: none; }
}

/* ---------- Аватар-портрет в правом верхнем углу с параллаксом ---------- */
.avatar-portrait {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 14;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    --px: 0;   /* нормированные [-1..1] */
    --py: 0;
}
.avatar-portrait__frame {
    position: relative;
    width: 132px;
    height: 132px;
    border-radius: 28px;
    overflow: hidden;
    background: #fff;
    box-shadow:
        0 18px 40px rgba(74, 39, 154, 0.28),
        0 4px 12px rgba(74, 39, 154, 0.18);
    transform: perspective(600px)
               rotateY(calc(var(--px) * 8deg))
               rotateX(calc(var(--py) * -8deg));
    transition: transform 0.18s ease-out;
    will-change: transform;
}
.avatar-portrait__bg {
    position: absolute;
    inset: -10%;
    background:
        radial-gradient(circle at 30% 30%, #c4b5fd 0%, transparent 60%),
        linear-gradient(135deg, #ddd6fe 0%, #fbcfe8 100%);
    transform: translate3d(calc(var(--px) * -10px), calc(var(--py) * -10px), 0);
    transition: transform 0.25s ease-out;
}
.avatar-portrait__photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.18s ease-out;
    will-change: transform;
}
.avatar-portrait__shine {
    position: absolute;
    inset: 0;
    mix-blend-mode: screen;
    pointer-events: none;
    transition: background 0.18s ease-out;
}
.avatar-portrait__ring {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.6);
    pointer-events: none;
}
.avatar-portrait__caption {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--fg);
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.25;
    box-shadow: var(--shadow);
}
.avatar-portrait__name { font-weight: 600; }
.avatar-portrait__status {
    color: var(--fg-muted);
    font-size: 11px;
}

/* пульс, когда наставник «говорит» (синхронизировано с #avatar audio) */
#avatar[data-speaking="true"] ~ .avatar-portrait .avatar-portrait__frame,
.avatar-portrait.is-speaking .avatar-portrait__frame {
    animation: avatar-pulse 1.4s ease-in-out infinite;
}
@keyframes avatar-pulse {
    0%, 100% { box-shadow: 0 18px 40px rgba(74, 39, 154, 0.28), 0 4px 12px rgba(74, 39, 154, 0.18); }
    50%      { box-shadow: 0 22px 50px rgba(124, 58, 237, 0.45), 0 0 0 6px rgba(167, 139, 250, 0.25); }
}

@media (max-width: 720px) {
    .avatar-portrait {
        top: 72px;
        right: 12px;
    }
    .avatar-portrait__frame { width: 88px; height: 88px; border-radius: 20px; }
    .avatar-portrait__caption { font-size: 11px; padding: 3px 8px; }
}

/* ===========================================================
   TTS controls внутри пузыря AI (правый нижний угол)
   =========================================================== */
.tts-controls {
    position: absolute;
    right: 8px;
    bottom: 6px;
    display: flex;
    gap: 4px;
    opacity: 0.55;
    transition: opacity 0.15s;
}
.chat-msg--bot:hover .tts-controls,
.chat-msg--bot.is-playing .tts-controls,
.chat-msg--bot.is-paused  .tts-controls { opacity: 1; }

.tts-btn {
    width: 26px;
    height: 26px;
    display: inline-grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    background: #fff;
    color: var(--brand);
    cursor: pointer;
    padding: 0;
    transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
    box-shadow: 0 1px 2px rgba(74, 39, 154, 0.08);
}
.tts-btn:hover {
    background: var(--bg-soft);
    border-color: var(--brand-soft);
    color: var(--brand-dark);
}
.tts-btn:active { transform: translateY(1px); }
.tts-btn svg {
    width: 14px;
    height: 14px;
    display: block;
}

.chat-msg--bot.is-playing .tts-btn--pause {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
}
.chat-msg--bot.is-paused .tts-btn--pause {
    background: var(--hint-bg);
    border-color: var(--hint-border);
    color: var(--hint);
}