/* =========================================================================
   دستیار سایوپیا — Floating AI Assistant widget
   Dark design system, Persian/RTL, logical properties (RTL/LTR safe).
   Tokens:
     canvas   #0A0A0F   surface  #141418   elevated #1C1C22
     border   rgba(255,255,255,.08)
     text     #F0F0F2 / #A0A0AB / #62626D
     accent   #6E56CF   success  #30A46C    error #E5484D
   ========================================================================= */

.ai-assistant {
    --ai-canvas: #0A0A0F;
    --ai-surface: #141418;
    --ai-elevated: #1C1C22;
    --ai-border: rgba(255, 255, 255, .08);
    --ai-text: #F0F0F2;
    --ai-text-2: #A0A0AB;
    --ai-text-3: #62626D;
    --ai-accent: #6E56CF;
    --ai-accent-strong: #7C66DB;
    --ai-success: #30A46C;
    --ai-error: #E5484D;
    --ai-radius: 18px;
    --ai-radius-sm: 12px;
    --ai-shadow: 0 18px 50px -12px rgba(0, 0, 0, .6), 0 0 0 1px var(--ai-border);
    --ai-z: 2147483000;

    position: fixed;
    inset-block-end: 24px;
    inset-inline-start: 24px; /* RTL => bottom-right, LTR => bottom-left */
    z-index: var(--ai-z);
    font-family: 'Vazirmatn', 'Inter', Tahoma, Arial, sans-serif;
    line-height: 1.7;
}

/* ---------- Launcher bubble ---------- */
.ai-launcher {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    inline-size: auto;
    min-block-size: 58px;
    padding-inline: 20px;
    border: 1px solid var(--ai-border);
    border-radius: 999px;
    background: linear-gradient(135deg, var(--ai-accent) 0%, #5847b3 100%);
    color: #fff;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 12px 34px -10px rgba(110, 86, 207, .7);
    transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
    -webkit-appearance: none;
    appearance: none;
}

.ai-launcher:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 42px -10px rgba(110, 86, 207, .85);
}

.ai-launcher:focus-visible {
    outline: 2px solid var(--ai-accent-strong);
    outline-offset: 3px;
}

.ai-launcher__icon {
    inline-size: 24px;
    block-size: 24px;
    flex: 0 0 auto;
}

.ai-launcher__label {
    white-space: nowrap;
}

/* Hide the launcher while the panel is open */
.ai-assistant.is-open .ai-launcher {
    opacity: 0;
    pointer-events: none;
    transform: scale(.9);
}

/* ---------- Panel ---------- */
.ai-panel {
    position: absolute;
    inset-block-end: 0;
    inset-inline-start: 0;
    inline-size: 380px;
    max-inline-size: calc(100vw - 32px);
    block-size: 600px;
    max-block-size: calc(100vh - 40px);
    display: none;
    flex-direction: column;
    overflow: hidden;
    background: var(--ai-surface);
    border: 1px solid var(--ai-border);
    border-radius: var(--ai-radius);
    box-shadow: var(--ai-shadow);
    transform-origin: bottom var(--ai-panel-origin, left);
    animation: ai-pop .2s ease;
}

.ai-assistant.is-open .ai-panel {
    display: flex;
}

@keyframes ai-pop {
    from { opacity: 0; transform: translateY(12px) scale(.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- Header ---------- */
.ai-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-block-end: 1px solid var(--ai-border);
    background: linear-gradient(180deg, rgba(110, 86, 207, .12), transparent);
    flex: 0 0 auto;
}

.ai-header__avatar {
    inline-size: 40px;
    block-size: 40px;
    flex: 0 0 auto;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ai-accent), #5847b3);
    color: #fff;
}

.ai-header__avatar svg {
    inline-size: 22px;
    block-size: 22px;
}

.ai-header__meta {
    display: flex;
    flex-direction: column;
    min-inline-size: 0;
    flex: 1 1 auto;
}

.ai-header__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ai-text);
    margin: 0;
}

.ai-header__status {
    font-size: 12px;
    color: var(--ai-text-2);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.ai-header__status::before {
    content: "";
    inline-size: 7px;
    block-size: 7px;
    border-radius: 50%;
    background: var(--ai-success);
    box-shadow: 0 0 0 3px rgba(48, 164, 108, .18);
}

.ai-header__close {
    inline-size: 36px;
    block-size: 36px;
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ai-border);
    border-radius: 10px;
    background: var(--ai-elevated);
    color: var(--ai-text-2);
    cursor: pointer;
    transition: color .15s ease, background .15s ease;
}

.ai-header__close:hover { color: var(--ai-text); background: #26262e; }
.ai-header__close:focus-visible { outline: 2px solid var(--ai-accent-strong); outline-offset: 2px; }
.ai-header__close svg { inline-size: 18px; block-size: 18px; }

/* ---------- Message list ---------- */
.ai-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    scrollbar-width: thin;
    scrollbar-color: var(--ai-elevated) transparent;
}

.ai-messages::-webkit-scrollbar { inline-size: 8px; }
.ai-messages::-webkit-scrollbar-thumb { background: var(--ai-elevated); border-radius: 8px; }

/* Empty / welcome state */
.ai-welcome {
    text-align: center;
    color: var(--ai-text-2);
    padding: 22px 10px;
}

.ai-welcome__title {
    color: var(--ai-text);
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 6px;
}

.ai-welcome__text {
    font-size: 13px;
    margin: 0 0 16px;
}

.ai-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.ai-suggestion {
    font-family: inherit;
    font-size: 13px;
    color: var(--ai-text);
    background: var(--ai-elevated);
    border: 1px solid var(--ai-border);
    border-radius: 999px;
    padding: 8px 14px;
    cursor: pointer;
    transition: border-color .15s ease, background .15s ease;
}

.ai-suggestion:hover { border-color: var(--ai-accent); background: #24222e; }
.ai-suggestion:focus-visible { outline: 2px solid var(--ai-accent-strong); outline-offset: 2px; }

/* ---------- Message bubble ---------- */
.ai-msg {
    display: flex;
    flex-direction: column;
    max-inline-size: 86%;
}

.ai-msg--user {
    align-self: flex-start; /* user on the start side */
    align-items: flex-start;
}

.ai-msg--assistant {
    align-self: flex-end;
    align-items: flex-end;
}

.ai-bubble {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 14px;
    color: var(--ai-text);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.ai-msg--user .ai-bubble {
    background: linear-gradient(135deg, var(--ai-accent), #5847b3);
    color: #fff;
    border-end-start-radius: 4px;
}

.ai-msg--assistant .ai-bubble {
    background: var(--ai-elevated);
    border: 1px solid var(--ai-border);
    border-end-end-radius: 4px;
}

.ai-bubble a {
    color: #c9bdf5;
    text-decoration: underline;
}

/* ---------- Rendered markdown (assistant bubble) ---------- */
.ai-bubble--md { white-space: normal; }
.ai-bubble--md p { margin: 0 0 8px; }
.ai-bubble--md p:last-child { margin-bottom: 0; }
.ai-bubble--md strong { font-weight: 700; color: #fff; }
.ai-bubble--md em { font-style: italic; }
.ai-bubble--md ul,
.ai-bubble--md ol { margin: 4px 0 8px; padding-inline-start: 20px; }
.ai-bubble--md ul:last-child,
.ai-bubble--md ol:last-child { margin-bottom: 0; }
.ai-bubble--md li { margin: 3px 0; }
.ai-bubble--md code {
    font-family: monospace;
    font-size: 12.5px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    padding: 1px 5px;
    direction: ltr;
    unicode-bidi: embed;
}
.ai-bubble--md a { overflow-wrap: anywhere; }

/* ---------- Action link chips ---------- */
.ai-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-block-start: 8px;
}

.ai-action-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--ai-text);
    background: var(--ai-surface);
    border: 1px solid var(--ai-accent);
    border-radius: 999px;
    padding: 7px 13px;
    text-decoration: none;
    transition: background .15s ease, transform .12s ease;
}

.ai-action-chip:hover { background: rgba(110, 86, 207, .18); transform: translateY(-1px); }
.ai-action-chip:focus-visible { outline: 2px solid var(--ai-accent-strong); outline-offset: 2px; }

.ai-action-chip__icon { inline-size: 14px; block-size: 14px; flex: 0 0 auto; color: var(--ai-accent); }

/* ---------- Speak (TTS) button on assistant messages ---------- */
.ai-speak {
    align-self: flex-end;
    margin-block-start: 6px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: inherit;
    font-size: 12px;
    color: var(--ai-text-2);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 6px;
}

.ai-speak:hover { color: var(--ai-text); }
.ai-speak:focus-visible { outline: 2px solid var(--ai-accent-strong); outline-offset: 2px; }
.ai-speak svg { inline-size: 15px; block-size: 15px; }
.ai-speak.is-loading { opacity: .6; pointer-events: none; }

/* ---------- Typing indicator ---------- */
.ai-typing {
    align-self: flex-end;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 12px 16px;
    background: var(--ai-elevated);
    border: 1px solid var(--ai-border);
    border-radius: 16px;
    border-end-end-radius: 4px;
}

.ai-typing span {
    inline-size: 7px;
    block-size: 7px;
    border-radius: 50%;
    background: var(--ai-text-2);
    animation: ai-blink 1.2s infinite ease-in-out both;
}

.ai-typing span:nth-child(2) { animation-delay: .18s; }
.ai-typing span:nth-child(3) { animation-delay: .36s; }

@keyframes ai-blink {
    0%, 80%, 100% { opacity: .25; transform: translateY(0); }
    40% { opacity: 1; transform: translateY(-3px); }
}

/* ---------- Banners (error / limit) ---------- */
.ai-banner {
    margin: 0 16px 8px;
    padding: 12px 14px;
    border-radius: var(--ai-radius-sm);
    font-size: 13px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 0 0 auto;
}

.ai-banner--error {
    background: rgba(229, 72, 77, .12);
    border: 1px solid rgba(229, 72, 77, .4);
    color: #f4b5b7;
}

.ai-banner--limit {
    background: rgba(110, 86, 207, .12);
    border: 1px solid rgba(110, 86, 207, .4);
    color: var(--ai-text);
}

.ai-banner__login {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--ai-accent);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 10px;
    transition: background .15s ease;
}

.ai-banner__login:hover { background: var(--ai-accent-strong); }
.ai-banner[hidden] { display: none; }

/* ---------- Recording indicator ---------- */
.ai-recording {
    display: none;
    align-items: center;
    gap: 10px;
    margin: 0 16px 8px;
    padding: 10px 14px;
    border-radius: var(--ai-radius-sm);
    background: rgba(229, 72, 77, .1);
    border: 1px solid rgba(229, 72, 77, .35);
    color: #f4b5b7;
    font-size: 13px;
    flex: 0 0 auto;
}

.ai-recording.is-active { display: flex; }

.ai-recording__dot {
    inline-size: 10px;
    block-size: 10px;
    border-radius: 50%;
    background: var(--ai-error);
    animation: ai-pulse 1s infinite ease-in-out;
    flex: 0 0 auto;
}

@keyframes ai-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .4; transform: scale(.8); }
}

.ai-recording__time { font-variant-numeric: tabular-nums; margin-inline-start: auto; }

.ai-recording__stop {
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: var(--ai-error);
    border: none;
    border-radius: 8px;
    padding: 6px 14px;
    cursor: pointer;
}

.ai-recording__stop:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* ---------- Composer / input row ---------- */
.ai-composer {
    flex: 0 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 12px;
    border-block-start: 1px solid var(--ai-border);
    background: var(--ai-surface);
}

.ai-composer.is-disabled { opacity: .55; pointer-events: none; }

.ai-input {
    flex: 1 1 auto;
    min-inline-size: 0;
    resize: none;
    max-block-size: 120px;
    min-block-size: 44px;
    padding: 11px 14px;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.6;
    color: var(--ai-text);
    background: var(--ai-elevated);
    border: 1px solid var(--ai-border);
    border-radius: 14px;
    transition: border-color .15s ease;
}

.ai-input::placeholder { color: var(--ai-text-3); }
.ai-input:focus { outline: none; border-color: var(--ai-accent); }

.ai-btn {
    flex: 0 0 auto;
    inline-size: 44px;
    block-size: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 1px solid var(--ai-border);
    background: var(--ai-elevated);
    color: var(--ai-text-2);
    cursor: pointer;
    transition: color .15s ease, background .15s ease, border-color .15s ease;
    -webkit-appearance: none;
    appearance: none;
}

.ai-btn svg { inline-size: 20px; block-size: 20px; }
.ai-btn:hover { color: var(--ai-text); border-color: var(--ai-accent); }
.ai-btn:focus-visible { outline: 2px solid var(--ai-accent-strong); outline-offset: 2px; }
.ai-btn:disabled { opacity: .5; cursor: not-allowed; }

.ai-btn--send {
    background: linear-gradient(135deg, var(--ai-accent), #5847b3);
    border-color: transparent;
    color: #fff;
}

.ai-btn--send:hover { color: #fff; filter: brightness(1.08); }

.ai-btn--mic.is-recording {
    background: var(--ai-error);
    border-color: transparent;
    color: #fff;
    animation: ai-pulse 1.2s infinite ease-in-out;
}

/* ---------- Mobile: full-height sheet ---------- */
@media (max-width: 560px) {
    .ai-assistant {
        inset-block-end: 16px;
        inset-inline-start: 16px;
    }

    .ai-assistant.is-open {
        inset: 0;
    }

    .ai-panel {
        position: fixed;
        inset: 0;
        inline-size: 100%;
        max-inline-size: 100%;
        block-size: 100%;
        max-block-size: 100%;
        border-radius: 0;
        border: none;
    }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .ai-panel,
    .ai-launcher,
    .ai-typing span,
    .ai-recording__dot,
    .ai-btn--mic.is-recording,
    .ai-action-chip { animation: none !important; transition: none !important; }
}