:root {
    --background: #f4faf7;
    --surface: #ffffff;
    --surface-soft: #edf7f2;
    --surface-strong: #e4f2eb;
    --border: #a9cfc3;
    --border-strong: #0c6f68;
    --text: #12332f;
    --text-secondary: #52716b;
    --text-muted: #78928d;
    --accent: #0b837b;
    --accent-dark: #075f59;
    --accent-soft: #d9eee7;
    --danger: #b54747;
    --warning: #a86c18;
    --shadow: 0 18px 45px rgba(13, 82, 75, .09);
    --sidebar-width: 268px;
    --artifact-width: 390px;
    --font-ui: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    overflow: hidden;
    color: var(--text);
    background: var(--background);
    font: 14px/1.5 var(--font-ui);
}
button, textarea { font: inherit; }
button { color: inherit; }

.workspace-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(480px, 1fr) 1px var(--artifact-width);
    height: 100dvh;
    background: var(--background);
    transition: grid-template-columns .22s ease;
}
.workspace-shell.sidebar-collapsed {
    --sidebar-width: 76px;
}
.workspace-shell.artifact-closed {
    --artifact-width: 0px;
}

.navigation-panel,
.artifact-panel {
    min-width: 0;
    background: var(--surface-soft);
    overflow: hidden;
}
.navigation-panel {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-strong);
}
.brand-row {
    height: 76px;
    padding: 15px 14px 10px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.brand-logo {
    width: 128px;
    height: 44px;
    object-fit: contain;
    object-position: left center;
}
.icon-button, .mini-button, .composer-button {
    border: 1px solid transparent;
    background: transparent;
    display: inline-grid;
    place-items: center;
    cursor: pointer;
    transition: .18s ease;
}
.icon-button {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border-color: var(--border);
    background: rgba(255,255,255,.58);
}
.icon-button:hover, .mini-button:hover, .composer-button:hover {
    color: var(--accent-dark);
    border-color: var(--border-strong);
    background: var(--accent-soft);
}
.new-chat-button {
    margin: 5px 14px 16px;
    min-height: 44px;
    padding: 0 14px;
    display: flex;
    align-items: center;
    gap: 11px;
    border-radius: 11px;
    border: 1px solid var(--border-strong);
    color: #fff;
    background: var(--accent-dark);
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 7px 18px rgba(7,95,89,.13);
}
.new-chat-button:hover { background: var(--accent); }
.nav-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0 12px 18px;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.nav-section { margin-top: 18px; }
.nav-section h2 {
    margin: 0 8px 8px;
    color: var(--text-muted);
    font-size: 11px;
    line-height: 1;
    letter-spacing: .09em;
    text-transform: uppercase;
    font-weight: 700;
}
.nav-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.mini-button {
    width: 27px;
    height: 27px;
    border-radius: 8px;
}
.count-pill {
    padding: 1px 7px;
    border-radius: 999px;
    color: var(--text-secondary);
    background: var(--accent-soft);
    font-size: 11px;
}
.instructions-list { display: grid; gap: 3px; }
.nav-item, .conversation-item {
    width: 100%;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    text-align: left;
}
.nav-item {
    min-height: 39px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    gap: 11px;
    border-radius: 9px;
    color: var(--text-secondary);
}
.nav-item i { width: 17px; color: var(--accent-dark); text-align: center; }
.nav-item:hover, .nav-item.active {
    color: var(--text);
    border-color: var(--border);
    background: rgba(255,255,255,.72);
}
.nav-item.active { font-weight: 600; box-shadow: 0 3px 10px rgba(13,82,75,.04); }
.conversation-list { display: grid; gap: 2px; }
.conversation-item {
    padding: 9px 10px;
    border-radius: 9px;
    color: var(--text-secondary);
}
.conversation-item span {
    display: block;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.conversation-item small { color: var(--text-muted); font-size: 11px; }
.conversation-item:hover { color: var(--text); background: rgba(255,255,255,.65); }
.nav-empty { padding: 8px 10px; color: var(--text-muted); font-size: 12px; }
.utility-section details {
    border-top: 1px solid var(--border);
    padding-top: 12px;
}
.utility-section summary {
    display: flex;
    gap: 10px;
    padding: 8px 10px;
    cursor: pointer;
    color: var(--text-secondary);
}
.memory-content { padding: 6px 10px; display: grid; gap: 8px; }
.memory-content div { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; }
.memory-content span { color: var(--text-muted); }
.memory-content strong { text-align: right; font-weight: 500; }
.memory-item { padding: 5px 0; }
.memory-label { margin-bottom: 2px; color: var(--text-muted); font-size: 11px; }
.memory-value { color: var(--text-secondary); font-size: 12px; overflow-wrap: anywhere; }
.memory-value ul { padding-left: 16px !important; }
.account-card {
    min-height: 72px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--border-strong);
    background: rgba(255,255,255,.42);
}
.avatar {
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: white;
    background: var(--accent-dark);
    font-weight: 700;
}
.account-copy { flex: 1; min-width: 0; display: grid; }
.account-copy strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.account-copy span { color: var(--text-muted); font-size: 11px; }
.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 4px;
    border-radius: 50%;
    background: #2c9b6f;
}

.conversation-panel {
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at 50% 25%, rgba(255,255,255,.9), transparent 35%),
        var(--background);
}
.conversation-header, .artifact-header {
    height: 76px;
    flex: 0 0 auto;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: rgba(244,250,247,.86);
    backdrop-filter: blur(12px);
}
.eyebrow {
    display: block;
    margin-bottom: 2px;
    color: var(--accent);
    font-size: 10px;
    letter-spacing: .1em;
    text-transform: uppercase;
    font-weight: 700;
}
.conversation-header h1, .artifact-header h2 {
    margin: 0;
    font-size: 17px;
    letter-spacing: -.02em;
}
.header-actions { display: flex; align-items: center; gap: 7px; }
.loading-indicator {
    display: none;
    align-items: center;
    gap: 7px;
    margin-right: 4px;
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 600;
}
.loading-indicator.active { display: flex; }
.spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--accent-soft);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.mobile-nav-toggle { display: none; }

.messages-container {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 34px max(28px, calc((100% - 760px) / 2));
    display: flex;
    flex-direction: column;
    gap: 24px;
    scrollbar-width: auto;
    scrollbar-color: var(--border) transparent;
}
.messages-container::-webkit-scrollbar { width: 10px; }
.messages-container::-webkit-scrollbar-track { background: transparent; }
.messages-container::-webkit-scrollbar-thumb {
    border: 3px solid transparent;
    border-radius: 999px;
    background: var(--border);
    background-clip: padding-box;
}
.messages-container::-webkit-scrollbar-thumb:hover { background-color: var(--border-strong); }
.message {
    max-width: 88%;
    animation: message-in .22s ease;
}
@keyframes message-in { from { opacity: 0; transform: translateY(6px); } }
.message-user {
    align-self: flex-end;
    padding: 11px 15px;
    border: 1px solid var(--border-strong);
    border-radius: 15px 15px 4px 15px;
    color: white;
    background: var(--accent-dark);
    box-shadow: 0 6px 15px rgba(7,95,89,.09);
}
.message-assistant, .message-system {
    align-self: flex-start;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text);
}
.message-system { max-width: 680px; }
.assistant-mark {
    width: 30px;
    height: 30px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-strong);
    border-radius: 9px;
    color: var(--accent-dark);
    background: var(--surface-soft);
}
.message-content { line-height: 1.68; overflow-wrap: anywhere; }
.message-assistant .message-content { width: min(100%, 720px); }
.message-content p { margin: 0 0 12px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content strong { color: var(--text); font-weight: 700; }
.message-content code {
    padding: 2px 5px;
    border-radius: 5px;
    color: var(--accent-dark);
    background: var(--accent-soft);
    font-size: .9em;
}
.assistant-summary {
    padding-left: 12px;
    border-left: 3px solid var(--accent);
    color: var(--text-secondary);
}
.property-response-list {
    list-style: none;
    margin: 16px 0;
    padding: 0;
    display: grid;
    gap: 10px;
}
.property-response-card {
    position: relative;
    padding: 15px 16px 15px 52px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--border-strong);
    border-radius: 13px;
    background: rgba(255,255,255,.72);
    box-shadow: 0 4px 14px rgba(13,82,75,.04);
}
.property-response-card:hover {
    border-color: var(--border-strong);
    background: var(--surface);
}
.property-response-number {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 25px;
    height: 25px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    color: #fff;
    background: var(--accent-dark);
    font-size: 11px;
    font-weight: 700;
}
.property-response-card h3 {
    margin: 0 0 7px;
    color: var(--text);
    font-size: 14px;
    line-height: 1.4;
}
.property-response-card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.65;
}
.property-detail-label { color: var(--accent-dark) !important; font-weight: 600 !important; }
.property-detail-separator {
    display: inline-block;
    width: 4px;
    height: 4px;
    margin: 0 8px 2px;
    border-radius: 50%;
    background: var(--border-strong);
}
.assistant-closing {
    padding: 10px 12px;
    border-radius: 9px;
    color: var(--text-secondary);
    background: var(--surface-soft);
    font-size: 12px;
}
.message-time { margin-top: 5px; color: var(--text-muted); font-size: 10px; }
.message-user .message-time { color: rgba(255,255,255,.7); text-align: right; }
.thinking-trace { width: 100%; max-width: 720px; align-self: flex-start; }
.thinking-step {
    display: flex;
    gap: 10px;
    padding: 7px 10px;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateY(4px);
    transition: .2s ease;
}
.thinking-step.visible { opacity: 1; transform: none; }
.step-icon { width: 22px; text-align: center; }
.step-title { color: var(--accent-dark); font-weight: 600; }
.step-desc { color: var(--text-muted); font-size: 12px; }
.thinking-trace-divider { margin: 7px 0; border-top: 1px solid var(--border); text-align: center; }
.thinking-trace-divider span {
    position: relative;
    top: -10px;
    padding: 0 9px;
    color: var(--text-muted);
    background: var(--background);
    font-size: 10px;
}

.composer-zone {
    flex: 0 0 auto;
    padding: 10px max(28px, calc((100% - 760px) / 2)) 16px;
}
.composer {
    padding: 10px;
    border: 1px solid var(--border-strong);
    border-radius: 17px;
    background: var(--surface);
    box-shadow: var(--shadow);
}
.chat-input {
    width: 100%;
    min-height: 52px;
    max-height: 150px;
    padding: 7px 8px;
    resize: none;
    border: 0;
    outline: 0;
    color: var(--text);
    background: transparent;
    line-height: 1.55;
}
.chat-input::placeholder { color: var(--text-muted); }
.composer:focus-within { box-shadow: 0 0 0 3px rgba(11,131,123,.1), var(--shadow); }
.composer-actions { display: flex; align-items: center; justify-content: space-between; }
.composer-actions > div { display: flex; gap: 3px; }
.composer-button {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    color: var(--text-secondary);
}
.send-button {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 10px;
    color: white;
    background: var(--accent-dark);
    cursor: pointer;
}
.send-button:hover:not(:disabled) { background: var(--accent); }
.send-button:disabled { opacity: .35; cursor: not-allowed; }
.composer-zone > p {
    margin: 7px 0 0;
    color: var(--text-muted);
    font-size: 10px;
    text-align: center;
}

.artifact-panel {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border-strong);
    background: var(--surface-soft);
    transition: opacity .18s ease;
}
.artifact-resizer {
    position: relative;
    z-index: 12;
    width: 1px;
    min-width: 1px;
    cursor: col-resize;
    background: var(--border-strong);
    touch-action: none;
}
.artifact-resizer::before {
    content: "";
    position: absolute;
    inset: 0 -6px;
}
.artifact-resizer::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 4px;
    height: 42px;
    border-radius: 999px;
    background: var(--border);
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity .18s ease, background .18s ease;
}
.artifact-resizer:hover::after,
.artifact-resizer:focus-visible::after,
.workspace-shell.resizing-artifact .artifact-resizer::after {
    opacity: 1;
    background: var(--accent-dark);
}
.artifact-resizer:focus-visible {
    outline: 3px solid rgba(11,131,123,.18);
    outline-offset: 4px;
}
.workspace-shell.resizing-artifact {
    cursor: col-resize;
    user-select: none;
}
.workspace-shell.resizing-artifact iframe {
    pointer-events: none;
}
.artifact-header { padding: 0 18px; background: rgba(237,247,242,.9); }
.artifact-content { flex: 1; min-height: 0; overflow-y: auto; padding: 20px; }
.artifact-empty {
    min-height: 100%;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px dashed var(--border-strong);
    border-radius: 18px;
    color: var(--text-secondary);
    text-align: center;
    background: rgba(255,255,255,.55);
}
.artifact-illustration {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-strong);
    border-radius: 18px;
    color: var(--accent-dark);
    background: var(--accent-soft);
    font-size: 24px;
}
.artifact-empty h3 { margin: 18px 0 6px; color: var(--text); font-size: 16px; }
.artifact-empty p { max-width: 280px; margin: 0; font-size: 12px; }
.artifact-types { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.artifact-types span {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--text-secondary);
    background: var(--surface);
    font-size: 11px;
}
.artifact-types i { margin-right: 5px; color: var(--accent); }
.artifact-loading, .artifact-error {
    min-height: 60%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-align: center;
}
.artifact-loading .spinner { width: 24px; height: 24px; }
.artifact-error > i { color: var(--danger); font-size: 28px; }
.artifact-error h3 { margin: 12px 0 4px; color: var(--text); }
.artifact-error button, .back-button {
    margin-top: 12px;
    padding: 8px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 9px;
    color: var(--accent-dark);
    background: var(--surface);
    cursor: pointer;
}
.property-collection-toolbar {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}
.property-collection-toolbar h3 { margin: 0; font-size: 16px; }
.property-collection-toolbar p { margin: 2px 0 0; color: var(--text-muted); font-size: 11px; }
.artifact-back-link {
    display: block;
    margin: 0 0 10px;
    padding: 0;
    border: 0;
    color: var(--accent-dark);
    background: transparent;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
}
.artifact-back-link i { margin-right: 5px; }
.view-pill {
    flex: 0 0 auto;
    padding: 6px 9px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    background: var(--surface);
    font-size: 10px;
}
.property-artifact-grid { display: grid; gap: 13px; }
.property-group-section + .property-group-section { margin-top: 22px; }
.property-group-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}
.property-group-heading h4 { margin: 0; color: var(--text); font-size: 13px; }
.property-group-heading h4 i { margin-right: 6px; color: var(--accent); }
.property-group-heading > span { color: var(--text-muted); font-size: 10px; }
.property-group-grid { display: grid; gap: 9px; }
.property-group-card {
    width: 100%;
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) auto;
    align-items: center;
    gap: 11px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    background: var(--surface);
    text-align: left;
    cursor: pointer;
    transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.property-group-card:hover, .property-group-card:focus-visible {
    border-color: var(--border-strong);
    outline: 0;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(13,82,75,.08);
}
.property-group-icon {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    color: var(--accent-dark);
    background: var(--surface-soft);
}
.property-group-copy { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.property-group-copy strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.property-group-copy small { color: var(--text-secondary); font-size: 10px; }
.property-group-types { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.property-group-types span {
    padding: 3px 5px;
    border-radius: 5px;
    color: var(--text-secondary);
    background: var(--surface-soft);
    font-size: 8px;
}
.property-group-card > .fa-chevron-right { color: var(--text-muted); font-size: 10px; }
.property-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 16px;
    padding-top: 13px;
    border-top: 1px solid var(--border);
}
.property-pagination span { color: var(--text-secondary); font-size: 10px; }
.property-pagination button {
    padding: 7px 9px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--accent-dark);
    background: var(--surface);
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
}
.property-pagination button:disabled { opacity: .4; cursor: default; }
.property-artifact-card {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    cursor: pointer;
    box-shadow: 0 5px 16px rgba(13,82,75,.05);
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.property-artifact-card:hover, .property-artifact-card:focus-visible {
    border-color: var(--border-strong);
    outline: 0;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(13,82,75,.10);
}
.property-card-media {
    position: relative;
    height: 185px;
    display: grid;
    place-items: center;
    overflow: hidden;
    color: var(--text-muted);
    background: var(--surface-strong);
    font-size: 25px;
}
.property-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .25s ease; }
.property-artifact-card:hover .property-card-media img { transform: scale(1.025); }
.property-status {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 8px;
    border-radius: 999px;
    color: var(--accent-dark);
    background: rgba(255,255,255,.9);
    box-shadow: 0 3px 10px rgba(0,0,0,.08);
    font-size: 9px;
    font-weight: 700;
}
.property-card-copy { padding: 13px 14px 14px; }
.property-code { color: var(--accent); font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.property-card-copy h4 {
    margin: 4px 0 7px;
    color: var(--text);
    font-size: 14px;
    line-height: 1.38;
}
.property-price { display: block; color: var(--accent-dark); font-size: 17px; }
.property-card-copy > p { margin: 6px 0; color: var(--text-secondary); font-size: 11px; }
.property-card-copy > p i { margin-right: 4px; color: var(--accent); }
.property-meta { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.property-meta span {
    padding: 4px 7px;
    border-radius: 6px;
    color: var(--text-secondary);
    background: var(--surface-soft);
    font-size: 10px;
}
.property-card-copy button {
    width: 100%;
    margin-top: 12px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--accent-dark);
    background: transparent;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
}
.property-card-copy button i { margin-left: 5px; }
.property-response-card.is-clickable { cursor: pointer; }
.property-response-card.is-clickable::after {
    content: "Ver detalle";
    display: inline-block;
    margin-top: 9px;
    color: var(--accent-dark);
    font-size: 10px;
    font-weight: 700;
}
.property-response-card.is-clickable:focus-visible {
    outline: 3px solid rgba(11,131,123,.16);
    outline-offset: 2px;
}
.back-button { margin: 0 0 14px; background: transparent; }
.property-gallery-stage {
    position: relative;
    height: clamp(230px, 34vw, 390px);
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 15px;
    background: var(--surface-strong);
}
.property-gallery-stage > img { width: 100%; height: 100%; object-fit: cover; }
.gallery-empty {
    height: 100%;
    display: grid;
    place-content: center;
    gap: 8px;
    color: var(--text-muted);
    text-align: center;
}
.gallery-empty i { font-size: 30px; }
.gallery-arrow {
    position: absolute;
    top: 50%;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 50%;
    color: var(--accent-dark);
    background: rgba(255,255,255,.88);
    cursor: pointer;
    transform: translateY(-50%);
    box-shadow: 0 4px 12px rgba(0,0,0,.12);
}
.gallery-prev { left: 10px; }
.gallery-next { right: 10px; }
.gallery-counter {
    position: absolute;
    right: 10px;
    bottom: 10px;
    padding: 4px 8px;
    border-radius: 999px;
    color: white;
    background: rgba(7,60,56,.72);
    font-size: 9px;
}
.property-thumbnails {
    margin-top: 8px;
    display: flex;
    gap: 7px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.property-thumbnails button {
    width: 66px;
    height: 48px;
    flex: 0 0 auto;
    overflow: hidden;
    padding: 0;
    border: 2px solid transparent;
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
}
.property-thumbnails button.active { border-color: var(--accent-dark); }
.property-thumbnails img { width: 100%; height: 100%; object-fit: cover; }
.property-videos, .detail-section, .property-detail-heading {
    margin-top: 17px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: rgba(255,255,255,.72);
}
.property-videos h4, .detail-section h4 { margin: 0 0 12px; font-size: 12px; }
.property-videos h4 i { margin-right: 5px; color: var(--accent); }
.property-videos video { display: block; width: 100%; max-height: 290px; margin-top: 9px; border-radius: 10px; background: #071f1d; }
.property-videos a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border-radius: 9px;
    color: var(--accent-dark);
    background: var(--surface-soft);
    text-decoration: none;
    font-weight: 600;
    font-size: 11px;
}
.property-detail-heading > span { color: var(--accent); font-size: 9px; font-weight: 700; text-transform: uppercase; }
.property-detail-heading h3 { margin: 5px 0 8px; font-size: 18px; line-height: 1.35; }
.property-detail-heading > strong { color: var(--accent-dark); font-size: 22px; }
.property-detail-heading p { margin: 7px 0 0; color: var(--text-secondary); font-size: 11px; }
.detail-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.detail-facts > div { padding: 9px; border-radius: 8px; background: var(--surface-soft); }
.detail-facts span { display: block; color: var(--text-muted); font-size: 9px; }
.detail-facts strong { display: block; margin-top: 2px; color: var(--text); font-size: 11px; overflow-wrap: anywhere; }
.property-description { margin: 0; color: var(--text-secondary); white-space: pre-line; font-size: 12px; line-height: 1.7; }
.property-source {
    margin: 16px 2px 4px;
    display: flex;
    gap: 7px;
    color: var(--text-muted);
    font-size: 9px;
}
.property-source i { color: var(--accent); }
.workspace-shell.artifact-closed .artifact-panel { opacity: 0; pointer-events: none; }
.workspace-shell.artifact-closed .artifact-resizer { opacity: 0; pointer-events: none; }
.workspace-shell.artifact-closed .artifact-toggle { color: var(--accent-dark); background: var(--accent-soft); }
.mobile-scrim { display: none; }
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0,0,0,0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.sidebar-collapsed .brand-logo,
.sidebar-collapsed .new-chat-button span,
.sidebar-collapsed .nav-section h2,
.sidebar-collapsed .nav-heading .count-pill,
.sidebar-collapsed .nav-item span,
.sidebar-collapsed .conversation-list,
.sidebar-collapsed .utility-section,
.sidebar-collapsed .account-copy,
.sidebar-collapsed .account-card .mini-button { display: none; }
.sidebar-collapsed .brand-row { justify-content: center; padding-inline: 10px; }
.sidebar-collapsed .toggle-sidebar i { transform: rotate(180deg); }
.sidebar-collapsed .new-chat-button { width: 44px; padding: 0; margin-inline: auto; justify-content: center; }
.sidebar-collapsed .nav-scroll { padding-inline: 10px; }
.sidebar-collapsed .nav-item { justify-content: center; padding: 0; }
.sidebar-collapsed .account-card { justify-content: center; padding-inline: 8px; }

@media (max-width: 1180px) {
    .workspace-shell { grid-template-columns: 76px minmax(0, 1fr); }
    .artifact-resizer { display: none; }
    .navigation-panel { width: 76px; }
    .artifact-panel {
        position: fixed;
        z-index: 30;
        inset: 0 0 0 auto;
        width: min(430px, 92vw);
        box-shadow: -18px 0 45px rgba(13,82,75,.14);
    }
    .workspace-shell:not(.artifact-closed) .mobile-scrim { display: block; position: fixed; z-index: 20; inset: 0; background: rgba(10,45,41,.18); }
    .brand-logo, .new-chat-button span, .nav-section h2, .nav-heading .count-pill,
    .nav-item span, .conversation-list, .utility-section, .account-copy, .account-card .mini-button { display: none; }
    .brand-row { justify-content: center; padding-inline: 10px; }
    .toggle-sidebar { display: none; }
    .new-chat-button { width: 44px; padding: 0; margin-inline: auto; justify-content: center; }
    .nav-scroll { padding-inline: 10px; }
    .nav-item { justify-content: center; padding: 0; }
    .account-card { justify-content: center; padding-inline: 8px; }
}
@media (max-width: 720px) {
    .workspace-shell { display: block; }
    .navigation-panel {
        position: fixed;
        z-index: 50;
        inset: 0 auto 0 0;
        width: min(300px, 88vw);
        transform: translateX(-102%);
        transition: transform .22s ease;
        box-shadow: 18px 0 45px rgba(13,82,75,.16);
    }
    .workspace-shell.mobile-nav-open .navigation-panel { transform: translateX(0); }
    .workspace-shell.mobile-nav-open .mobile-scrim { display: block; position: fixed; z-index: 40; inset: 0; background: rgba(10,45,41,.22); }
    .navigation-panel .brand-logo, .navigation-panel .new-chat-button span, .navigation-panel .nav-section h2,
    .navigation-panel .nav-heading .count-pill, .navigation-panel .nav-item span,
    .navigation-panel .conversation-list, .navigation-panel .utility-section,
    .navigation-panel .account-copy, .navigation-panel .account-card .mini-button { display: initial; }
    .navigation-panel .brand-row { justify-content: space-between; padding-inline: 18px 14px; }
    .navigation-panel .new-chat-button { width: auto; padding: 0 14px; margin-inline: 14px; justify-content: flex-start; }
    .navigation-panel .nav-scroll { padding-inline: 12px; }
    .navigation-panel .nav-item { justify-content: flex-start; padding: 0 10px; }
    .navigation-panel .account-card { justify-content: flex-start; padding-inline: 14px; }
    .mobile-nav-toggle { display: inline-grid; }
    .conversation-header { padding-inline: 14px; }
    .conversation-header .eyebrow { display: none; }
    .conversation-header h1 { font-size: 15px; }
    .messages-container { padding: 24px 16px; }
    .composer-zone { padding: 8px 12px 12px; }
    .message { max-width: 94%; }
    .artifact-panel { width: 100vw; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}