/* ИИ-чат: зелёная палитра в тон каталога АРГО (--accent: #0f766e) */
.chat-page-body {
    --chat-primary: #0f766e;
    --chat-primary-hover: #0d9488;
    --chat-primary-dark: #115e59;
    --chat-primary-soft: #ecfdf5;
    --chat-primary-muted: #d1fae5;
    --chat-border: #bbf7d0;
    --chat-border-strong: #6ee7b7;
    --chat-text: #14532d;
    --chat-text-muted: #4b7c5f;
    --chat-surface: #ffffff;
    --chat-page-bg: #f0fdf4;

    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--chat-page-bg, #f0fdf4);
}

.chat-page-body > .page-header {
    flex-shrink: 0;
}

.chat-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    gap: 1rem;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    width: min(1600px, calc(100vw - 2rem));
    max-width: 1600px;
    margin: 0 auto;
    padding: 1rem;
    box-sizing: border-box;
}

.chat-layout--guest {
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
}

.chat-layout--guest .chat-main {
    min-height: 0;
    height: 100%;
}

.chat-guest-hint {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.4;
    color: var(--chat-text-muted);
}

.chat-sidebar--guest {
    align-self: start;
    height: auto;
    min-height: 0;
    overflow: visible;
    padding: 0.65rem 0.75rem;
    gap: 0.5rem;
}

.chat-sidebar--guest .chat-sidebar-header {
    gap: 0.35rem;
}

.chat-sidebar--guest .chat-sidebar-title {
    font-size: 0.9375rem;
}

.chat-sidebar--guest .chat-btn {
    padding: 0.35rem 0.55rem;
    font-size: 0.8125rem;
    white-space: nowrap;
}

.chat-sidebar {
    background: var(--chat-surface);
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.chat-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.chat-sidebar-title {
    margin: 0;
    font-size: 1rem;
    color: var(--chat-primary-dark);
}

.chat-conversations-list {
    list-style: none;
    margin: 0;
    padding: 0;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.chat-conversation-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.chat-conversation-btn {
    flex: 1;
    text-align: left;
    border: 1px solid var(--chat-border);
    background: var(--chat-primary-soft);
    color: var(--chat-text);
    border-radius: 8px;
    padding: 0.55rem 0.65rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
}

.chat-conversation-btn:hover {
    background: var(--chat-primary-muted);
    color: var(--chat-primary-dark);
    border-color: var(--chat-border-strong);
}

.chat-conversation-btn.is-active {
    border-color: var(--chat-primary);
    background: var(--chat-primary-muted);
    color: var(--chat-primary-dark);
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--chat-primary);
}

.chat-conversation-delete {
    border: none;
    background: transparent;
    color: #6b9b7a;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
}

.chat-conversation-delete:hover {
    color: var(--chat-primary);
}

.chat-main {
    background: var(--chat-surface);
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: linear-gradient(180deg, #fafefb 0%, #ffffff 120px);
}

.chat-message {
    max-width: 92%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    line-height: 1.5;
    color: var(--chat-text);
}

.chat-message--user {
    white-space: pre-wrap;
}

.chat-message-body.markdown-body {
    white-space: normal;
}

.chat-message-body.markdown-body > :first-child {
    margin-top: 0;
}

.chat-message-body.markdown-body > :last-child {
    margin-bottom: 0;
}

.chat-message-body.markdown-body p {
    margin: 0.45rem 0;
}

.chat-message-body.markdown-body ul,
.chat-message-body.markdown-body ol {
    margin: 0.45rem 0;
    padding-left: 1.25rem;
}

.chat-message-body.markdown-body li + li {
    margin-top: 0.2rem;
}

.chat-message-body.markdown-body h1,
.chat-message-body.markdown-body h2,
.chat-message-body.markdown-body h3,
.chat-message-body.markdown-body h4 {
    margin: 0.6rem 0 0.35rem;
    line-height: 1.3;
    color: var(--chat-primary-dark);
}

.chat-message-body.markdown-body h2 {
    font-size: 1.05rem;
}

.chat-message-body.markdown-body h3 {
    font-size: 1rem;
}

.chat-message-body.markdown-body strong {
    font-weight: 600;
}

.chat-message-body.markdown-body blockquote {
    margin: 0.5rem 0;
    padding: 0.35rem 0.75rem;
    border-left: 3px solid var(--chat-border-strong);
    color: var(--chat-text-muted);
}

.chat-message-body.markdown-body code {
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.9em;
    background: rgba(15, 118, 110, 0.08);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
}

.chat-message-body.markdown-body pre {
    margin: 0.5rem 0;
    padding: 0.65rem 0.75rem;
    overflow-x: auto;
    background: #ecfdf5;
    border: 1px solid var(--chat-border);
    border-radius: 8px;
}

.chat-message-body.markdown-body pre code {
    background: none;
    padding: 0;
}

.chat-message-body.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.92rem;
}

.chat-message-body.markdown-body th,
.chat-message-body.markdown-body td {
    border: 1px solid var(--chat-border);
    padding: 0.35rem 0.5rem;
    text-align: left;
}

.chat-message-body.markdown-body th {
    background: var(--chat-primary-muted);
}

.chat-message-body.markdown-body a {
    color: var(--chat-primary);
    text-decoration: underline;
}

.chat-message-body.markdown-body a:hover {
    color: var(--chat-primary-hover);
}

.chat-message--user {
    align-self: flex-end;
    background: var(--chat-primary-muted);
    border: 1px solid var(--chat-border-strong);
}

.chat-message--assistant {
    align-self: flex-start;
    background: var(--chat-primary-soft);
    border: 1px solid var(--chat-border);
}

.chat-message-meta {
    display: block;
    font-size: 0.75rem;
    color: var(--chat-text-muted);
    margin-bottom: 0.25rem;
}

.chat-context-hint {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--chat-text-muted);
}

.chat-products-block {
    margin-top: 0.75rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--chat-border);
}

.chat-products-title {
    margin: 0 0 0.45rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--chat-text);
}

.chat-products-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.chat-product-item {
    margin: 0;
}

.chat-product-link {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.25rem;
    color: var(--chat-primary-dark);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 1.35;
    padding: 0.2rem 0;
}

.chat-product-link:hover {
    color: var(--chat-primary);
    text-decoration: underline;
}

.chat-product-code {
    font-weight: 600;
    color: var(--chat-primary);
}

.chat-product-name {
    color: var(--chat-text);
}

.chat-product-price {
    color: var(--chat-text-muted);
    font-size: 0.8125rem;
}

.chat-inline-product-link {
    font-weight: 600;
}

.chat-knowledge-links-block {
    margin-top: 0.75rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--chat-border);
}

.chat-knowledge-links-title {
    margin: 0 0 0.45rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--chat-text);
}

.chat-knowledge-links-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.chat-knowledge-link {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    color: var(--chat-primary-dark);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 1.35;
}

.chat-knowledge-link:hover {
    color: var(--chat-primary);
    text-decoration: underline;
}

.chat-knowledge-link-kind {
    font-weight: 600;
    color: var(--chat-primary);
}

.chat-resource-link {
    word-break: break-word;
}

.chat-input-form {
    display: flex;
    flex-wrap: nowrap;
    align-items: flex-end;
    gap: 0.75rem;
    padding: 1rem;
    border-top: 1px solid var(--chat-border);
    background: var(--chat-primary-soft);
    flex-shrink: 0;
}

.chat-input {
    flex: 1 1 auto;
    min-width: 0;
    width: 100%;
    resize: vertical;
    min-height: 72px;
    border: 1px solid var(--chat-border-strong);
    border-radius: 8px;
    padding: 0.65rem 0.75rem;
    font: inherit;
    color: var(--chat-text);
    background: var(--chat-surface);
}

.chat-input:focus {
    outline: none;
    border-color: var(--chat-primary);
    box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.15);
}

.chat-btn {
    border: none;
    border-radius: 8px;
    padding: 0.55rem 1rem;
    cursor: pointer;
    font: inherit;
}

.chat-btn-primary {
    background: var(--chat-primary);
    color: #fff;
    border: 1px solid var(--chat-primary-dark);
    flex-shrink: 0;
    align-self: flex-end;
    height: auto;
    white-space: nowrap;
}

.chat-btn-primary:hover:not(:disabled) {
    background: var(--chat-primary-hover);
}

.chat-btn-secondary {
    background: var(--chat-primary-muted);
    color: var(--chat-primary-dark);
    border: 1px solid var(--chat-border-strong);
}

.chat-btn-secondary:hover:not(:disabled) {
    background: #a7f3d0;
}

.chat-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.chat-status {
    padding: 0 1rem 0.5rem;
    color: var(--chat-text-muted);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.chat-status.is-loading {
    color: var(--chat-primary-dark);
}

.chat-status-loading {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.85rem;
    background: var(--chat-primary-soft);
    border: 1px solid var(--chat-border);
    border-radius: 10px;
}

.chat-status-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--chat-border-strong);
    border-top-color: var(--chat-primary);
    border-radius: 50%;
    animation: chat-status-spin 0.85s linear infinite;
    flex-shrink: 0;
}

@keyframes chat-status-spin {
    to {
        transform: rotate(360deg);
    }
}

.chat-status-text {
    line-height: 1.4;
}

.chat-status-dots {
    display: inline-flex;
    gap: 4px;
    align-items: center;
    margin-left: 2px;
}

.chat-status-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--chat-primary);
    animation: chat-status-dot-bounce 1.2s ease-in-out infinite;
}

.chat-status-dots span:nth-child(2) {
    animation-delay: 0.15s;
}

.chat-status-dots span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes chat-status-dot-bounce {
    0%,
    80%,
    100% {
        transform: scale(0.65);
        opacity: 0.45;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.chat-status.is-error {
    color: #b91c1c;
}

@media (prefers-reduced-motion: reduce) {
    .chat-status-spinner,
    .chat-status-dots span {
        animation: none;
    }
}

.chat-empty {
    color: var(--chat-text-muted);
    text-align: center;
    margin: auto;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 900px) {
    .chat-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto minmax(0, 1fr);
    }

    .chat-layout--guest {
        grid-template-columns: 1fr;
        grid-template-rows: auto minmax(0, 1fr);
    }

    .chat-sidebar:not(.chat-sidebar--guest) {
        max-height: 180px;
        height: auto;
    }

    .chat-sidebar--guest {
        max-height: none;
        height: auto;
    }

    .chat-main {
        min-height: 0;
        height: 100%;
    }
}