:root {
    color-scheme: light;
    --bg: #f4f6f8;
    --surface: #ffffff;
    --text: #17202a;
    --muted: #647184;
    --line: #dce2e8;
    --accent: #1769e0;
    --accent-dark: #0f54ba;
    --accent-soft: #eaf2ff;
    --danger: #b42318;
    --danger-soft: #fff0ee;
    --success: #137a45;
    --success-soft: #eaf8f0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

button, input, select { font: inherit; }

.shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 64px 0 96px;
}

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

.eyebrow {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: .75rem;
    font-weight: 750;
    letter-spacing: .1em;
    text-transform: uppercase;
}

h1, h2, h3, h4 { line-height: 1.18; }
h1 { margin: 0; font-size: clamp(2.1rem, 5vw, 3.5rem); letter-spacing: -.045em; }
h2 { margin: 0; font-size: 1.45rem; }
h3 { margin: 28px 0 12px; font-size: 1.12rem; }
h4 { margin: 20px 0 10px; color: var(--muted); font-size: .95rem; }
.intro { margin: 14px 0 0; color: var(--muted); font-size: 1.04rem; }

.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 8px 28px rgba(30, 50, 70, .06);
    padding: 24px;
}

label { display: block; margin-bottom: 8px; font-weight: 650; }
.load-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
input, select {
    min-width: 0;
    border: 1px solid #bcc7d2;
    border-radius: 9px;
    background: #fff;
    color: var(--text);
}
input { min-height: 46px; padding: 10px 13px; }
select { padding: 7px 32px 7px 10px; }
input:focus, select:focus, button:focus-visible { outline: 3px solid rgba(23, 105, 224, .22); outline-offset: 1px; border-color: var(--accent); }

button {
    min-height: 42px;
    border: 0;
    border-radius: 9px;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
    padding: 10px 18px;
}
button:hover { background: var(--accent-dark); }
button:disabled { cursor: wait; opacity: .65; }

.hint { margin: 10px 0 0; color: var(--muted); font-size: .86rem; }
.sheet-options { display: flex; align-items: end; gap: 18px; margin-top: 12px; }
.sheet-options > div { width: 180px; }
.sheet-options label { margin-bottom: 4px; font-size: .83rem; }
.sheet-options label span, .sheet-options p { color: var(--muted); font-size: .78rem; font-weight: 400; }
.sheet-options input { width: 100%; min-height: 38px; }
.sheet-options p { max-width: 560px; margin: 0; }
.sheet-options code { color: var(--text); }
.status { margin-top: 16px; border-radius: 9px; padding: 11px 13px; white-space: pre-line; }
.status.loading { background: var(--accent-soft); color: var(--accent-dark); }
.status.success { background: var(--success-soft); color: var(--success); }
.status.error { background: var(--danger-soft); color: var(--danger); }

#workspace { margin-top: 22px; }
.summary { margin-bottom: 22px; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.metrics { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.metrics div { min-width: 76px; text-align: right; }
.metrics strong, .metrics span { display: block; }
.metrics strong { font-size: 1.1rem; }
.metrics span { color: var(--muted); font-size: .75rem; }
.warnings, .preamble { margin-top: 18px; border-radius: 9px; padding: 10px 13px; }
.warnings { background: #fff8e5; color: #765b00; }
.preamble { border-left: 3px solid var(--accent); background: var(--accent-soft); }
.warnings p, .preamble p { margin: 4px 0; }

.mapping { overflow-x: auto; }
.header-override { display: flex; align-items: end; gap: 12px; margin-top: 16px; }
.header-override label { flex: 1; margin: 0; color: var(--muted); font-size: .83rem; font-weight: 500; }
.mapping-table, .data-table { width: 100%; border-collapse: collapse; }
th { color: var(--muted); font-size: .76rem; letter-spacing: .035em; text-align: left; text-transform: uppercase; }
th, td { border-bottom: 1px solid var(--line); padding: 11px 12px; vertical-align: top; }
.type-label { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; }

.preview-tools {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin: 26px 0 16px;
}
.search-wrap { flex: 1; max-width: 600px; }
.search-wrap input { width: 100%; }
.result-count { margin: 0 0 11px; color: var(--muted); font-size: .85rem; white-space: nowrap; }
.category-filter { display: flex; gap: 8px; overflow-x: auto; padding: 0 0 12px; }
.category-filter button { min-height: 36px; flex: 0 0 auto; border: 1px solid var(--line); background: var(--surface); color: var(--text); font-size: .88rem; padding: 7px 13px; }
.category-filter button:hover, .category-filter button.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-dark); }

.data-group {
    margin-bottom: 18px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    overflow: hidden;
}
.data-group > h3, .data-group > h4 { margin: 0; padding: 18px 20px 0; }
.data-group > h4 { padding-top: 10px; }
.table-wrap { overflow-x: auto; }
.data-table { margin-top: 8px; }
.data-table th { background: #f9fafb; }
.data-table tbody tr:hover { background: #f8fbff; }
.data-table td[data-role="price"] { font-variant-numeric: tabular-nums; font-weight: 700; white-space: nowrap; }
.data-table td[data-role="description"] { color: var(--muted); min-width: 220px; }
.data-table td[data-role="primary"] { font-weight: 650; min-width: 180px; }

.empty-state { border: 1px dashed #bcc7d2; border-radius: 14px; background: var(--surface); color: var(--muted); padding: 48px 24px; text-align: center; }
.debug-panel { margin-top: 22px; }
.debug-panel summary { cursor: pointer; font-weight: 700; }
.debug-panel pre { max-height: 560px; overflow: auto; margin: 18px 0 0; border-radius: 9px; background: #111827; color: #e5e7eb; font: .78rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 16px; white-space: pre-wrap; word-break: break-word; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

@media (max-width: 700px) {
    .shell { width: min(100% - 20px, 1180px); padding: 34px 0 60px; }
    .panel { border-radius: 12px; padding: 17px; }
    .load-row { grid-template-columns: 1fr; }
    .sheet-options { align-items: stretch; flex-direction: column; gap: 8px; }
    .sheet-options > div { width: 100%; }
    .section-heading, .preview-tools { align-items: stretch; flex-direction: column; }
    .metrics { justify-content: flex-start; }
    .metrics div { text-align: left; }
    .preview-tools { gap: 8px; }
    .result-count { margin: 0; }
    .data-group { border: 0; background: transparent; overflow: visible; }
    .data-group > h3, .data-group > h4 { padding-left: 3px; }
    .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
    .data-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
    .data-table tbody { display: grid; gap: 10px; }
    .data-table tr { border: 1px solid var(--line); border-radius: 11px; background: var(--surface); padding: 12px 14px; }
    .data-table td { display: grid; grid-template-columns: minmax(90px, 38%) 1fr; gap: 12px; border: 0; padding: 5px 0; min-width: 0 !important; }
    .data-table td::before { content: attr(data-label); color: var(--muted); font-size: .78rem; font-weight: 600; }
    .data-table td[data-role="primary"] { display: block; border-bottom: 1px solid var(--line); margin-bottom: 6px; padding: 0 0 10px; font-size: 1.02rem; }
    .data-table td[data-role="primary"]::before { display: none; }
    .mapping-table th, .mapping-table td { padding: 9px 8px; }
    .header-override { align-items: stretch; flex-direction: column; }
}