/* ACM AI coach: compact IDE drawer, scoped to the ACM surface. */
body[data-ai-surface="acm"] {
    --acm-ai-panel-width: clamp(340px, 27vw, 420px);
    --ai-accent: #35c9a5;
    --ai-accent-strong: #20aa89;
    --ai-panel-surface: color-mix(in srgb, var(--bg-secondary) 94%, #101820 6%);
    --ai-panel-raised: color-mix(in srgb, var(--bg-tertiary) 92%, #17212a 8%);
}

body[data-ai-surface="acm"] .acm-main {
    transition: margin-right 220ms ease;
}

.btn-ai-coach {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 34px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid color-mix(in srgb, var(--ai-accent) 55%, var(--border-color));
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.84rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.btn-ai-coach:hover,
.btn-ai-coach.active {
    border-color: var(--ai-accent);
    background: color-mix(in srgb, var(--ai-accent) 12%, var(--bg-tertiary));
    color: var(--ai-accent);
}

.btn-ai-coach:focus-visible,
.ai-icon-btn:focus-visible,
.ai-quick-btn:focus-visible,
.ai-input:focus-visible,
.ai-send-btn:focus-visible,
.ai-config-btn:focus-visible,
.ai-config-field input:focus-visible,
.ai-code-action:focus-visible {
    outline: 2px solid var(--ai-accent);
    outline-offset: 2px;
}

.btn-ai-coach .ai-brand-icon {
    flex: 0 0 auto;
}

.acm-ai-panel {
    position: fixed;
    z-index: 1200;
    top: 60px;
    right: 0;
    bottom: 0;
    width: var(--acm-ai-panel-width);
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(100%);
    background: var(--ai-panel-surface);
    border-left: 1px solid var(--border-color);
    box-shadow: -12px 0 28px rgba(0, 0, 0, 0.24);
    transition: transform 220ms ease, visibility 0s linear 220ms;
}

.acm-ai-panel.open {
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s;
}

.ai-panel-header {
    min-height: 46px;
    padding: 7px 10px 7px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex: 0 0 auto;
    border-bottom: 1px solid var(--border-color);
    background: var(--ai-panel-raised);
}

.ai-panel-title {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 0.86rem;
    font-weight: 650;
}

.ai-panel-title-icon {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    border: 1px solid color-mix(in srgb, var(--ai-accent) 38%, var(--border-color));
    border-radius: 6px;
    color: var(--ai-accent);
    background: color-mix(in srgb, var(--ai-accent) 9%, transparent);
}

.ai-panel-actions {
    display: flex;
    align-items: center;
    gap: 2px;
}

.ai-icon-btn {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
}

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

.ai-context-summary {
    min-height: 34px;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    flex: 0 0 auto;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.ai-context-summary::before {
    content: "";
    width: 6px;
    height: 6px;
    margin-right: 8px;
    flex: 0 0 auto;
    border-radius: 50%;
    background: var(--ai-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--ai-accent) 14%, transparent);
}

.ai-messages {
    min-height: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 16px 14px 20px;
    scrollbar-color: var(--border-hover) transparent;
    scrollbar-width: thin;
}

.ai-live-status {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.ai-welcome {
    margin: auto 0;
    padding: 24px 12px;
    text-align: center;
    color: var(--text-secondary);
}

.ai-welcome-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ai-accent);
}

.ai-welcome-icon .ai-brand-icon-large {
    width: 44px;
    height: 44px;
}

.ai-welcome h3 {
    margin: 0 0 7px;
    color: var(--text-primary);
    font-size: 1rem;
    letter-spacing: 0;
}

.ai-welcome p {
    max-width: 285px;
    margin: 0 auto;
    font-size: 0.81rem;
    line-height: 1.6;
}

.ai-welcome-hint {
    margin-top: 8px !important;
    color: var(--text-muted);
}

.ai-msg {
    width: 100%;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.ai-msg-user {
    flex-direction: row-reverse;
}

.ai-msg-avatar {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    border-radius: 6px;
    color: var(--ai-accent);
    background: var(--ai-panel-raised);
    border: 1px solid var(--border-color);
}

.ai-msg-avatar svg {
    width: 15px;
    height: 15px;
}

.ai-msg-bubble {
    max-width: calc(100% - 40px);
    padding: 9px 11px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--ai-panel-raised);
    color: var(--text-primary);
    font-size: 0.82rem;
    line-height: 1.62;
}

.ai-msg-user .ai-msg-bubble {
    border-color: color-mix(in srgb, var(--ai-accent) 32%, var(--border-color));
    background: color-mix(in srgb, var(--ai-accent) 12%, var(--ai-panel-raised));
}

.ai-msg-system {
    justify-content: center;
}

.ai-msg-system-text {
    max-width: 92%;
    padding: 5px 9px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    font-size: 0.72rem;
    text-align: center;
}

.ai-msg-content {
    min-width: 0;
    overflow-wrap: anywhere;
}

.ai-msg-content p {
    margin: 0 0 0.55em;
}

.ai-msg-content p:last-child {
    margin-bottom: 0;
}

.ai-msg-content h1,
.ai-msg-content h2,
.ai-msg-content h3,
.ai-msg-content h4 {
    margin: 0.75em 0 0.35em;
    color: var(--text-primary);
    font-size: 0.92rem;
    letter-spacing: 0;
}

.ai-msg-content ul,
.ai-msg-content ol {
    margin: 0.4em 0;
    padding-left: 1.25rem;
}

.ai-msg-content li + li {
    margin-top: 0.25em;
}

.ai-msg-content code {
    padding: 1px 4px;
    border-radius: 4px;
    background: color-mix(in srgb, var(--bg-primary) 84%, transparent);
    color: color-mix(in srgb, var(--text-primary) 88%, var(--ai-accent));
    font-family: var(--font-mono);
    font-size: 0.84em;
}

.ai-msg-content pre {
    max-width: 100%;
    margin: 8px 0;
    padding: 10px 11px;
    overflow: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    line-height: 1.5;
}

.ai-msg-content pre code {
    padding: 0;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.76rem;
}

.ai-code-block {
    max-width: 100%;
    margin: 8px 0;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
}

.ai-code-toolbar {
    min-width: 0;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 4px 5px 4px 10px;
    border-bottom: 1px solid var(--border-color);
    background: var(--ai-panel-raised);
}

.ai-code-language {
    min-width: 0;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ai-code-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ai-code-action {
    min-width: 56px;
    min-height: 30px;
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font: inherit;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.ai-code-action-apply {
    min-width: 86px;
    border-color: color-mix(in srgb, var(--ai-accent) 35%, var(--border-color));
}

.ai-code-action:hover:not(:disabled) {
    border-color: var(--ai-accent);
    background: color-mix(in srgb, var(--ai-accent) 10%, var(--bg-tertiary));
    color: var(--ai-accent);
}

.ai-code-action:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ai-msg-content .ai-code-block pre {
    margin: 0;
    padding: 10px 11px;
    border: 0;
    border-radius: 0;
}

.ai-msg-content a {
    color: var(--ai-accent);
}

.ai-msg-content blockquote {
    margin: 8px 0;
    padding-left: 10px;
    border-left: 2px solid var(--ai-accent);
    color: var(--text-secondary);
}

.ai-error {
    padding: 8px 9px;
    border: 1px solid color-mix(in srgb, var(--hard) 40%, var(--border-color));
    border-radius: 6px;
    background: color-mix(in srgb, var(--hard) 9%, transparent);
    color: var(--hard);
    font-size: 0.78rem;
}

.ai-retry-btn {
    margin-top: 8px;
    padding: 6px 11px;
    border: 1px solid color-mix(in srgb, var(--ai-accent) 55%, var(--border-color));
    border-radius: 6px;
    background: color-mix(in srgb, var(--ai-accent) 12%, transparent);
    color: var(--ai-accent);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.ai-retry-btn:hover:not(:disabled) { background: color-mix(in srgb, var(--ai-accent) 20%, transparent); }
.ai-retry-btn:disabled { opacity: 0.55; cursor: wait; }

.ai-typing {
    min-height: 20px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.ai-typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: acm-ai-typing 1s ease-in-out infinite;
}

.ai-typing-dot:nth-child(2) { animation-delay: 120ms; }
.ai-typing-dot:nth-child(3) { animation-delay: 240ms; }

@keyframes acm-ai-typing {
    0%, 70%, 100% { opacity: 0.32; transform: translateY(0); }
    35% { opacity: 1; transform: translateY(-2px); }
}

.ai-quick-actions {
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 0 0 auto;
    border-top: 1px solid var(--border-color);
    background: var(--ai-panel-surface);
}

.ai-conversion-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 7px;
}

.ai-secondary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.ai-quick-btn {
    min-height: 30px;
    padding: 5px 9px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.72rem;
    line-height: 1.2;
    white-space: normal;
    cursor: pointer;
    transition: border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

.ai-quick-btn:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.ai-quick-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

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

.ai-quick-btn-primary {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    border-color: color-mix(in srgb, var(--ai-accent) 38%, var(--border-color));
    background: color-mix(in srgb, var(--ai-accent) 8%, var(--bg-tertiary));
    color: var(--text-primary);
    font-size: 0.78rem;
    font-weight: 650;
}

.ai-quick-btn-primary:hover {
    border-color: var(--ai-accent);
    background: color-mix(in srgb, var(--ai-accent) 14%, var(--bg-tertiary));
}

.ai-language-mark {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    border-radius: 5px;
    background: #b85f24;
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
}

.ai-language-mark-go {
    background: #1688a7;
    font-size: 0.62rem;
}

.ai-composer {
    flex: 0 0 auto;
    border-top: 1px solid var(--border-color);
    background: var(--ai-panel-raised);
}

.ai-input-area {
    padding: 10px 12px 6px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.ai-input {
    min-width: 0;
    min-height: 38px;
    max-height: 120px;
    flex: 1 1 auto;
    resize: none;
    padding: 9px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: 0;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    line-height: 1.45;
}

.ai-input:focus {
    border-color: color-mix(in srgb, var(--ai-accent) 70%, var(--border-color));
}

.ai-input::placeholder {
    color: var(--text-muted);
}

.ai-send-btn {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    padding: 0;
    border: 1px solid var(--ai-accent-strong);
    border-radius: 6px;
    background: var(--ai-accent-strong);
    color: #061713;
    cursor: pointer;
    transition: filter 140ms ease, background-color 140ms ease;
}

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

.ai-send-btn.is-stop {
    border-color: color-mix(in srgb, var(--hard) 72%, var(--border-color));
    background: color-mix(in srgb, var(--hard) 18%, var(--bg-tertiary));
    color: var(--hard);
}

.ai-send-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ai-data-note {
    margin: 0;
    padding: 0 12px 9px;
    color: var(--text-muted);
    font-size: 0.65rem;
    line-height: 1.4;
}

.ai-overlay {
    position: fixed;
    z-index: 1150;
    inset: 0;
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    background: rgba(4, 7, 10, 0.58);
    transition: opacity 180ms ease, visibility 0s linear 180ms;
}

.ai-overlay.visible {
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
    transition-delay: 0s;
}

.ai-config-modal {
    position: fixed;
    z-index: 1400;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    padding: 18px;
    background: rgba(4, 7, 10, 0.7);
    transition: opacity 160ms ease, visibility 0s linear 160ms;
}

.ai-config-modal.open {
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
    transition-delay: 0s;
}

.ai-config-content {
    width: min(400px, 100%);
    max-height: calc(100dvh - 36px);
    overflow-y: auto;
    padding: 20px;
    border: 1px solid var(--border-hover);
    border-radius: 8px;
    background: var(--bg-secondary);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
}

.ai-config-content h2 {
    margin: 0 0 6px;
    color: var(--text-primary);
    font-size: 1rem;
    letter-spacing: 0;
}

.ai-config-desc {
    margin: 0 0 18px;
    color: var(--text-muted);
    font-size: 0.76rem;
    line-height: 1.5;
}

.ai-config-field {
    margin-bottom: 13px;
}

.ai-config-field label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 600;
}

.ai-config-field input {
    width: 100%;
    min-height: 38px;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: 0;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.76rem;
}

.ai-config-field input:focus {
    border-color: var(--ai-accent);
}

.ai-config-actions {
    margin-top: 18px;
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.ai-config-btn {
    min-height: 36px;
    padding: 7px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
}

.ai-config-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.ai-config-btn-save {
    border-color: var(--ai-accent-strong);
    background: var(--ai-accent-strong);
    color: #061713;
}

@media (min-width: 1200px) {
    body[data-ai-surface="acm"].ai-open .acm-main {
        margin-right: var(--acm-ai-panel-width);
    }

    body[data-ai-surface="acm"] .ai-overlay {
        display: none;
    }
}

@media (min-width: 1200px) and (max-width: 1550px) {
    body[data-ai-surface="acm"].ai-open .acm-toolbar {
        flex-wrap: wrap;
    }

    body[data-ai-surface="acm"].ai-open .toolbar-left {
        width: 100%;
    }

    body[data-ai-surface="acm"].ai-open .toolbar-right {
        margin-left: auto;
    }
}

@media (max-width: 1199px) {
    .acm-ai-panel {
        width: min(440px, 92vw);
    }

    .ai-icon-btn,
    .ai-send-btn {
        width: 44px;
        height: 44px;
    }

    .ai-quick-btn,
    .ai-config-btn {
        min-height: 44px;
    }

    .ai-config-field input,
    .ai-input {
        min-height: 44px;
    }
}

@media (max-width: 768px) {
    .toolbar-right .btn-ai-coach {
        width: 44px;
        min-height: 44px;
        padding: 0;
    }

    .ai-coach-label {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    .acm-ai-panel {
        top: auto;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: min(720px, calc(100dvh - 60px));
        max-height: calc(100dvh - 60px);
        border-top: 1px solid var(--border-hover);
        border-left: 0;
        box-shadow: 0 -14px 34px rgba(0, 0, 0, 0.34);
        transform: translateY(100%);
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }

    .acm-ai-panel.open {
        transform: translateY(0);
    }

    .ai-panel-header {
        min-height: 48px;
    }

    .ai-messages {
        padding-bottom: 14px;
    }
}

@media (max-height: 560px) and (max-width: 768px) {
    .ai-welcome-icon {
        display: none;
    }

    .ai-welcome {
        padding: 10px;
    }

    .ai-secondary-actions {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    body[data-ai-surface="acm"] .acm-main,
    .acm-ai-panel,
    .ai-overlay,
    .ai-config-modal,
    .btn-ai-coach,
    .ai-quick-btn,
    .ai-send-btn {
        transition: none !important;
    }

    .ai-typing-dot {
        animation: none;
        opacity: 0.65;
    }
}

@media (pointer: coarse) {
    .ai-code-action {
        min-height: 44px;
    }
}