:root {
    --bg: #f5f7fb;
    --ink: #172033;
    --muted: #5f6f89;
    --panel: #ffffff;
    --line: #dce4ef;
    --blue: #2563eb;
    --green: #0f8f73;
    --amber: #b7791f;
    --shadow: 0 18px 50px rgba(23, 32, 51, 0.11);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        linear-gradient(130deg, rgba(37, 99, 235, 0.08), transparent 38%),
        linear-gradient(210deg, rgba(15, 143, 115, 0.12), transparent 34%),
        var(--bg);
}

button,
input {
    font: inherit;
}

.app-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 48px 0;
}

.intro {
    max-width: 760px;
    margin-bottom: 28px;
}

.eyebrow,
.label {
    margin: 0 0 8px;
    color: var(--green);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 12px;
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.02;
}

.intro p:last-child,
.outcome p,
.source-list p {
    color: var(--muted);
}

.workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
    gap: 20px;
    align-items: start;
}

.assistant-panel,
.retrieval-panel,
.outcome {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.assistant-panel,
.retrieval-panel {
    padding: 24px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 22px;
}

.panel-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.status {
    flex: 0 0 auto;
    border: 1px solid rgba(15, 143, 115, 0.28);
    border-radius: 999px;
    color: var(--green);
    background: rgba(15, 143, 115, 0.08);
    padding: 5px 10px;
    font-size: 0.78rem;
    font-weight: 700;
}

.source-status {
    margin: -8px 0 18px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.question-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 800;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
}

input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 13px 14px;
    color: var(--ink);
    background: #fbfdff;
}

input:focus {
    border-color: var(--blue);
    outline: 3px solid rgba(37, 99, 235, 0.14);
}

button {
    border: 0;
    border-radius: 8px;
    color: #fff;
    background: var(--blue);
    padding: 12px 18px;
    font-weight: 800;
    cursor: pointer;
}

button:hover {
    filter: brightness(0.96);
}

.quick-questions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 14px 0 24px;
}

.quick-questions button {
    border: 1px solid var(--line);
    color: var(--ink);
    background: #f8fafc;
    padding: 8px 10px;
    font-size: 0.86rem;
}

.answer-block {
    border-top: 1px solid var(--line);
    padding-top: 20px;
}

.answer {
    min-height: 170px;
    border-radius: 8px;
    background: #f8fbff;
    border: 1px solid #e4edf8;
    padding: 18px;
}

.answer p {
    margin-bottom: 12px;
}

.answer ul {
    margin: 0;
    padding-left: 20px;
}

.source-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding-left: 20px;
}

.source-list li {
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
}

.source-list li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.source-list strong {
    display: block;
    margin-bottom: 3px;
}

.source-list small {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-weight: 700;
}

.score {
    display: inline-block;
    margin-bottom: 6px;
    color: var(--amber);
    font-size: 0.78rem;
    font-weight: 800;
}

.outcome {
    margin-top: 20px;
    padding: 24px;
}

.outcome h2 {
    margin-bottom: 16px;
}

.outcome-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.outcome-grid strong {
    display: block;
    margin-bottom: 6px;
}

@media (max-width: 820px) {
    .app-shell {
        width: min(100% - 24px, 1120px);
        padding: 28px 0;
    }

    .workspace,
    .outcome-grid {
        grid-template-columns: 1fr;
    }

    .input-row {
        grid-template-columns: 1fr;
    }
}