/* ==========================================================================
   Portfolio assistant — the launcher button and the chat panel.

   Like the navigation and the hero, the widget is a dark "stage" in both
   themes, so it uses only stage tokens and the red fill.
   ========================================================================== */

.chatbot {
    position: fixed;
    right: var(--space-5);
    bottom: var(--space-5);
    z-index: calc(var(--z-header) + 1);
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.chatbot :focus-visible {
    outline-color: var(--color-stage-accent);
}

/* --- Launcher ---------------------------------------------------------------- */
.chatbot-launcher {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 52px;
    padding: 0 var(--space-5) 0 var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-on-accent);
    background: var(--color-accent-fill);
    border: 0;
    border-radius: var(--radius-pill);
    box-shadow: 0 10px 30px var(--color-stage-shadow);
    cursor: pointer;
    transition: background-color var(--dur-fast) ease;
}

.chatbot-launcher:hover {
    background: var(--color-accent-fill-hover);
}

.chatbot-launcher:focus-visible {
    outline: 2px solid var(--color-on-accent);
    outline-offset: 3px;
}

.chatbot-launcher-icon {
    display: grid;
    place-items: center;
}

.chatbot-launcher-icon .icon {
    width: 1rem;
    height: 1rem;
}

.chatbot.is-open .chatbot-launcher {
    display: none;
}

/* --- Panel --------------------------------------------------------------------- */
.chatbot-panel {
    display: flex;
    flex-direction: column;
    width: min(24rem, calc(100vw - 2 * var(--space-5)));
    height: min(36rem, calc(100vh - var(--header-height) - 2 * var(--space-5)));
    overflow: hidden;
    color: var(--color-on-stage);
    background: var(--color-stage);
    border: var(--border-width) solid var(--color-stage-border);
    border-radius: var(--radius-sm);
    box-shadow: 0 24px 60px var(--color-stage-shadow);
}

.chatbot-panel[hidden] {
    display: none;
}

.chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: var(--border-width) solid var(--color-stage-border);
}

.chatbot-title {
    margin: 0;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    line-height: 1.4;
    letter-spacing: var(--tracking-label);
    color: var(--color-stage-accent);
}

.chatbot-close {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-on-stage-secondary);
    border: var(--border-width) solid var(--color-stage-border);
    border-radius: 50%;
    cursor: pointer;
}

.chatbot-close:hover {
    color: var(--color-on-stage);
    border-color: var(--color-stage-accent);
}

/* --- Messages ------------------------------------------------------------------ */
.chatbot-messages {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-5);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.chatbot-message {
    max-width: 88%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    line-height: 1.55;
    overflow-wrap: anywhere;
    border-radius: var(--radius-sm);
}

.chatbot-message p,
.chatbot-message ul {
    margin: 0;
}

.chatbot-message p + p,
.chatbot-message p + ul,
.chatbot-message ul + p,
.chatbot-message ul + ul {
    margin-top: var(--space-2);
}

.chatbot-message ul {
    padding-left: var(--space-5);
}

.chatbot-message.is-assistant {
    align-self: flex-start;
    background: var(--color-stage-raised);
    border: var(--border-width) solid var(--color-stage-border);
}

.chatbot-message.is-user {
    align-self: flex-end;
    color: var(--color-on-accent);
    background: var(--color-accent-fill);
}

.chatbot-message.is-error {
    align-self: flex-start;
    border: var(--border-width) solid var(--color-stage-accent);
}

.chatbot-link {
    color: var(--color-stage-accent);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.chatbot-link:hover {
    color: var(--color-on-stage);
}

.chatbot-typing {
    display: inline-flex;
    gap: 4px;
}

.chatbot-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-on-stage-muted);
    animation: chatbot-dot 1s ease-in-out infinite;
}

.chatbot-typing span:nth-child(2) {
    animation-delay: 0.15s;
}

.chatbot-typing span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes chatbot-dot {
    0%, 80%, 100% { opacity: 0.3; transform: none; }
    40% { opacity: 1; transform: translateY(-3px); }
}

/* --- Suggestions and input ------------------------------------------------------ */
.chatbot-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: 0 var(--space-5) var(--space-4);
}

.chatbot-suggestions[hidden] {
    display: none;
}

.chatbot-chip {
    min-height: 44px;
    padding: 0.45rem 0.75rem;
    font-size: var(--text-xs);
    text-align: left;
    color: var(--color-on-stage-secondary);
    border: var(--border-width) solid var(--color-stage-border);
    border-radius: var(--radius-pill);
    cursor: pointer;
}

.chatbot-chip:hover {
    color: var(--color-on-stage);
    border-color: var(--color-stage-accent);
}

.chatbot-form {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-top: var(--border-width) solid var(--color-stage-border);
}

.chatbot-input {
    flex: 1;
    min-height: 44px;
    max-height: 8rem;
    padding: 0.65rem 0.8rem;
    font-size: var(--text-sm);
    color: var(--color-on-stage);
    background: var(--color-stage-raised);
    border: var(--border-width) solid var(--color-stage-border);
    border-radius: var(--radius-sm);
    resize: none;
}

.chatbot-input::placeholder {
    color: var(--color-on-stage-muted);
}

.chatbot-input:focus {
    outline: none;
    border-color: var(--color-stage-accent);
}

.chatbot-send {
    min-height: 44px;
    padding: 0 var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-on-accent);
    background: var(--color-accent-fill);
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.chatbot-send:hover {
    background: var(--color-accent-fill-hover);
}

.chatbot-input:disabled,
.chatbot-send:disabled {
    opacity: 0.6;
    cursor: progress;
}

.chatbot-note {
    margin: 0;
    padding: 0 var(--space-4) var(--space-3);
    font-size: var(--text-2xs);
    color: var(--color-on-stage-muted);
}

/* --- Small screens, reduced motion, print ----------------------------------------- */
@media (max-width: 560px) {
    .chatbot {
        right: var(--space-4);
        bottom: var(--space-4);
    }

    .chatbot.is-open {
        inset: 0;
    }

    .chatbot.is-open .chatbot-panel {
        width: 100%;
        height: 100%;
        border: 0;
        border-radius: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .chatbot-typing span {
        animation: none;
        opacity: 0.7;
    }
}

@media print {
    .chatbot {
        display: none;
    }
}