:root {
    --bg: #f3f6f8;
    --panel: #ffffff;
    --ink: #172235;
    --muted: #607086;
    --line: #d8e0ea;
    --brand: #0f7f8f;
    --brand-dark: #0d3445;
    --ok: #28764f;
    --warn: #ad6900;
    --soft: #ecf8fa;
    --radius: 8px;
    --shadow: 0 12px 28px rgba(23, 34, 53, .08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    line-height: 1.45;
}

a { color: inherit; }

.topbar {
    background: var(--brand-dark);
    color: #fff;
    border-bottom: 4px solid var(--brand);
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
}

.topbar h1 {
    margin: 0;
    font-size: 24px;
    letter-spacing: 0;
}

.topbar p {
    margin: 4px 0 0;
    color: #d7e8ee;
}

.legacy {
    border: 1px solid rgba(255,255,255,.35);
    border-radius: 999px;
    padding: 8px 12px;
    text-decoration: none;
    white-space: nowrap;
}

.shell {
    max-width: 1440px;
    margin: 0 auto;
    padding: 18px;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr) 310px;
    gap: 16px;
}

.nav,
.content > section,
.side section {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.nav,
.side {
    align-self: start;
    position: sticky;
    top: 14px;
}

.nav {
    padding: 10px;
}

.nav-title {
    display: block;
    padding: 9px 10px;
    color: var(--muted);
    text-transform: uppercase;
    font-size: 12px;
}

.nav-link {
    display: block;
    text-decoration: none;
    padding: 10px;
    border-radius: 7px;
    margin-bottom: 4px;
}

.nav-link span {
    display: block;
    font-weight: 700;
}

.nav-link small {
    display: block;
    color: var(--muted);
    margin-top: 1px;
}

.nav-link.active {
    background: var(--soft);
    color: #075c69;
}

.content {
    min-width: 0;
    display: grid;
    gap: 14px;
}

.hero {
    padding: 22px;
}

.kicker {
    margin: 0 0 6px;
    color: #075c69;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 12px;
}

h2,
h3 {
    margin: 0;
    letter-spacing: 0;
}

.hero h2 {
    font-size: 28px;
    line-height: 1.1;
}

.hero p:last-child {
    margin: 8px 0 0;
    color: var(--muted);
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
}

.learn-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
}

.learn-card h3 {
    font-size: 16px;
    margin-bottom: 7px;
}

.learn-card p,
.learn-card li,
.muted {
    color: var(--muted);
}

.learn-card ul {
    margin: 7px 0 0;
    padding-left: 18px;
}

.panel {
    padding: 18px;
}

.module-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 14px;
}

.field {
    min-width: 0;
}

.field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #c5cfda;
    border-radius: 7px;
    padding: 10px;
    color: var(--ink);
    background: #fff;
    font: inherit;
}

textarea {
    min-height: 108px;
    resize: vertical;
}

.check-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.check-grid label {
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 9px;
    margin: 0;
    font-weight: 400;
}

.check-grid input {
    width: auto;
    margin-right: 6px;
}

.page-actions {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
}

.btn {
    display: inline-block;
    border: 0;
    border-radius: 7px;
    padding: 10px 14px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    font: inherit;
}

.btn.primary { background: var(--brand); color: #fff; }
.btn.dark { background: #26394b; color: #fff; }
.btn.ghost { background: #e8eef4; color: var(--ink); }

.side {
    display: grid;
    gap: 14px;
}

.score-card {
    padding: 15px;
}

.score-card h2 {
    font-size: 17px;
    margin-bottom: 10px;
}

.bar {
    height: 10px;
    background: #e9eef4;
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 8px;
}

.bar span {
    display: block;
    width: 0%;
    height: 100%;
    background: var(--ok);
    transition: width .2s ease;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 10px;
}

.chip {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 5px 8px;
    color: var(--muted);
    background: #fff;
    font-size: 12px;
    font-weight: 700;
}

.result-block {
    border-left: 4px solid var(--brand);
    background: #f6fbfc;
    padding: 11px;
    border-radius: 7px;
}

.result-block.warn {
    border-left-color: var(--warn);
    background: #fff7e8;
}

.result-block ul {
    margin: 8px 0 0;
    padding-left: 18px;
}

.blueprint-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.blue-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 13px;
    background: #fbfcfd;
}

.blue-card h4 {
    margin: 0 0 7px;
}

.jsonbox {
    min-height: 260px;
    margin-top: 14px;
    background: #111a25;
    color: #e5f2ff;
    font-family: Consolas, Monaco, monospace;
    font-size: 12px;
}

.builder-panel {
    padding: 18px;
}

.builder-head {
    margin-bottom: 14px;
}

.builder-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr .8fr;
    gap: 14px;
    align-items: start;
}

.builder-learn,
.time-form,
.builder-result {
    display: grid;
    gap: 10px;
}

.rule-card,
.tb-input,
.builder-result .result-block,
.mapping-list {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fbfcfd;
}

.rule-card {
    padding: 12px;
}

.rule-card h4 {
    margin: 0 0 6px;
    font-size: 15px;
}

.rule-card p {
    margin: 6px 0 0;
    color: var(--muted);
}

.rule-card strong {
    color: var(--ink);
}

.time-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.time-form h3 {
    grid-column: 1 / -1;
}

.tb-input {
    padding: 10px;
    background: #fff;
}

.tb-input label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
}

.builder-result {
    position: sticky;
    top: 14px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.metric {
    border: 1px solid var(--line);
    border-radius: 7px;
    background: #fff;
    padding: 9px;
}

.metric small {
    display: block;
    color: var(--muted);
}

.metric strong {
    display: block;
    margin-top: 3px;
}

.mapping-list {
    margin: 0;
    padding: 12px 12px 12px 28px;
    color: var(--muted);
}

.collector-grid {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr) 280px;
    gap: 14px;
    align-items: start;
}

.form-picker,
.form-workbench,
.form-result {
    display: grid;
    gap: 10px;
}

.form-picker {
    position: sticky;
    top: 14px;
}

.form-picker label {
    font-weight: 700;
}

.form-meta,
.dynamic-form,
.form-result .result-block {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fbfcfd;
    padding: 12px;
}

.form-meta p {
    margin: 6px 0;
    color: var(--muted);
}

.dynamic-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.dyn-field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
}

.dyn-field small {
    display: block;
    color: var(--muted);
    margin-top: 4px;
}

.dyn-field.full {
    grid-column: 1 / -1;
}

.table-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.table-tags span {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px 7px;
    color: var(--muted);
    background: #fff;
    font-size: 12px;
}

.chat-console {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 14px;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
}

.chat-main,
.chat-side {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
}

.chat-intro {
    margin-bottom: 12px;
}

.quick-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.quick-prompts button {
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    border-radius: 999px;
    padding: 8px 10px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.chat-window {
    height: 420px;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #f8fafc;
    padding: 12px;
    display: grid;
    align-content: start;
    gap: 10px;
}

.message {
    max-width: 82%;
    border-radius: 10px;
    padding: 10px 12px;
    white-space: pre-wrap;
}

.message.user {
    justify-self: end;
    background: var(--brand);
    color: #fff;
}

.message.bot {
    justify-self: start;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--ink);
}

.message.bot strong {
    color: var(--brand-dark);
}

.chat-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    margin-top: 12px;
}

.chat-side {
    align-self: start;
}

.chat-side ul {
    margin: 8px 0 18px;
    padding-left: 18px;
    color: var(--muted);
}

@media (max-width: 1180px) {
    .shell {
        grid-template-columns: 230px minmax(0, 1fr);
    }

    .side {
        grid-column: 1 / -1;
        position: static;
    }
}

@media (max-width: 820px) {
    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .shell,
    .module-form,
    .learn-grid,
    .blueprint-grid,
    .builder-grid,
    .time-form,
    .collector-grid,
    .dynamic-form,
    .chat-console {
        grid-template-columns: 1fr;
    }

    .message {
        max-width: 96%;
    }

    .nav {
        position: static;
    }
}