.app-shell { width: min(calc(100% - 32px), 1440px); margin: 0 auto; }

.tool-header .nav { width: min(calc(100% - 32px), 1440px); }
.tool-header .nav-right { display: flex; align-items: center; gap: 12px; }
.privacy-pill { padding: 7px 10px; border: 1px solid #28543a; color: var(--ok); font: 700 .69rem/1 var(--mono); text-transform: uppercase; }

.tool-intro { padding: 46px 0 28px; }
.tool-intro-grid { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 28px; }
.tool-intro h1 { margin: 0; font-size: clamp(2.5rem, 5.5vw, 5.1rem); line-height: .95; letter-spacing: -.06em; }
.tool-intro p { max-width: 760px; margin: 18px 0 0; color: var(--muted); font-size: 1.02rem; }
.privacy-note { max-width: 330px; padding: 16px; border-left: 2px solid var(--ok); color: var(--muted); background: rgba(126,211,154,.06); font-size: .86rem; }
.privacy-note strong { display: block; color: var(--ok); margin-bottom: 4px; }

.workspace { display: grid; grid-template-columns: minmax(380px, .84fr) minmax(520px, 1.16fr); min-height: 680px; border: 1px solid var(--line-strong); background: var(--line); }
.input-panel, .results-panel { min-width: 0; background: var(--panel); }
.input-panel { border-right: 1px solid var(--line-strong); }
.workspace-head { min-height: 62px; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 18px; border-bottom: 1px solid var(--line-strong); }
.workspace-head h2 { margin: 0; font-size: .84rem; font-family: var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.workspace-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.small-button { min-height: 34px; padding: 0 11px; border: 1px solid var(--line-strong); color: var(--muted); background: transparent; cursor: pointer; font: 700 .69rem/1 var(--mono); text-transform: uppercase; }
.small-button:hover { color: var(--text); border-color: var(--text); }
.small-button.accent { color: #0b0d0f; border-color: var(--accent); background: var(--accent); }
.small-button:disabled { opacity: .45; cursor: not-allowed; }

.project-field { padding: 18px 18px 0; }
.field-label { display: block; margin-bottom: 7px; color: var(--soft); font: 700 .7rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.text-input, .mapping-select { width: 100%; min-height: 42px; border: 1px solid var(--line); border-radius: 0; color: var(--text); background: #0d1012; padding: 9px 11px; }
.text-input:focus, .mapping-select:focus { border-color: var(--accent); outline: 0; }

.drop-zone { margin: 16px 18px 0; padding: 16px; border: 1px dashed var(--line-strong); color: var(--muted); background: #0d1012; text-align: center; }
.drop-zone.dragover { border-color: var(--accent); color: var(--text); background: rgba(255,107,44,.06); }
.file-label { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.file-input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.file-name { display: block; margin-top: 6px; color: var(--soft); font: 500 .68rem/1.2 var(--mono); }

.editor-wrap { padding: 16px 18px 18px; }
.csv-editor { width: 100%; min-height: 350px; resize: vertical; padding: 14px; border: 1px solid var(--line); border-radius: 0; color: #d8e0e5; background: #090b0d; font: 500 .78rem/1.55 var(--mono); tab-size: 2; }
.csv-editor:focus { outline: 0; border-color: var(--accent); }
.editor-meta { display: flex; flex-wrap: wrap; gap: 7px 14px; margin-top: 9px; color: var(--soft); font: 500 .66rem/1.2 var(--mono); }
.editor-meta span { position: relative; }
.editor-meta span:not(:last-child)::after { content: "·"; position: absolute; right: -9px; color: var(--line-strong); }

.mapping { margin: 0 18px 18px; padding: 16px; border: 1px solid var(--line); background: #0d1012; }
.mapping-title { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; }
.mapping-title strong { display: block; font: 700 .72rem/1.2 var(--mono); text-transform: uppercase; }
.mapping-title span { display: block; margin-top: 4px; color: var(--soft); font-size: .72rem; }
.mapping-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.mapping-grid label:last-child { grid-column: 1 / -1; }

.run-bar { position: sticky; bottom: 0; display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; padding: 14px 18px; border-top: 1px solid var(--line-strong); background: rgba(17,20,23,.96); backdrop-filter: blur(10px); }
.run-help { color: var(--soft); font-size: .78rem; }
.analyze-button { min-height: 46px; padding: 0 20px; border: 1px solid var(--accent); color: #0b0d0f; background: var(--accent); cursor: pointer; font-weight: 800; }
.analyze-button:hover { background: #ff7c45; }

.results-content { padding: 18px; }
.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.summary-card { min-width: 0; padding: 14px; border: 1px solid var(--line); background: #0d1012; }
.summary-card span { display: block; color: var(--soft); font: 600 .64rem/1.2 var(--mono); text-transform: uppercase; }
.summary-card strong { display: block; margin-top: 6px; font-size: clamp(1.25rem, 2vw, 1.8rem); line-height: 1; }
.summary-card.warning strong { color: var(--warning); }
.summary-card.error strong { color: var(--error); }
.summary-card.ok strong { color: var(--ok); }

.result-status { display: flex; align-items: center; gap: 10px; margin: 18px 0; padding: 13px 14px; border-left: 3px solid var(--warning); color: var(--muted); background: rgba(255,199,102,.06); }
.result-status.ok { border-color: var(--ok); background: rgba(126,211,154,.06); }
.result-status.error { border-color: var(--error); background: rgba(255,123,114,.06); }
.result-status strong { color: var(--text); }

.result-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--line-strong); }
.tab-button { padding: 12px 14px; border: 0; border-bottom: 2px solid transparent; color: var(--soft); background: transparent; cursor: pointer; font: 700 .72rem/1.2 var(--mono); text-transform: uppercase; }
.tab-button[aria-selected="true"] { color: var(--text); border-color: var(--accent); }
.tab-panel[hidden] { display: none; }

.table-wrap { max-height: 410px; overflow: auto; border: 1px solid var(--line); border-top: 0; }
.data-table { width: 100%; border-collapse: collapse; font-size: .78rem; }
.data-table th { position: sticky; top: 0; z-index: 2; padding: 10px; color: var(--soft); background: #0d1012; border-bottom: 1px solid var(--line-strong); text-align: left; font: 700 .65rem/1.2 var(--mono); text-transform: uppercase; }
.data-table td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.severity { display: inline-flex; min-width: 62px; justify-content: center; padding: 4px 6px; border: 1px solid var(--line); font: 700 .62rem/1 var(--mono); text-transform: uppercase; }
.severity.error { color: var(--error); border-color: rgba(255,123,114,.45); }
.severity.warning { color: var(--warning); border-color: rgba(255,199,102,.45); }
.severity.info { color: #8fc7ff; border-color: rgba(143,199,255,.45); }
.empty-state { min-height: 270px; display: grid; place-items: center; padding: 36px; color: var(--soft); text-align: center; border: 1px solid var(--line); border-top: 0; }
.empty-state strong { display: block; color: var(--text); margin-bottom: 6px; }

.export-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.disclaimer { margin: 14px 0 0; color: var(--soft); font-size: .72rem; }

.how-it-works { padding: 84px 0 100px; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-strong); }
.how-step { padding: 26px; border-right: 1px solid var(--line-strong); background: rgba(17,20,23,.74); }
.how-step:last-child { border-right: 0; }
.how-step strong { display: block; color: var(--accent-soft); font: 700 .72rem/1.2 var(--mono); }
.how-step h2 { margin: 38px 0 8px; font-size: 1.25rem; }
.how-step p { margin: 0; color: var(--muted); }

.toast { position: fixed; right: 22px; bottom: 22px; z-index: 80; max-width: min(380px, calc(100% - 44px)); padding: 13px 16px; border: 1px solid var(--line-strong); color: var(--text); background: #181c20; box-shadow: 0 16px 50px rgba(0,0,0,.35); transform: translateY(20px); opacity: 0; pointer-events: none; transition: .18s ease; }
.toast.show { transform: translateY(0); opacity: 1; }

.print-report { display: none; }

@media (max-width: 1050px) {
  .tool-intro-grid { grid-template-columns: 1fr; }
  .privacy-note { max-width: 620px; }
  .workspace { grid-template-columns: 1fr; }
  .input-panel { border-right: 0; border-bottom: 1px solid var(--line-strong); }
}

@media (max-width: 680px) {
  .app-shell, .tool-header .nav { width: min(calc(100% - 20px), 1440px); }
  .tool-header .brand-text, .privacy-pill { display: none; }
  .tool-intro { padding-top: 32px; }
  .tool-intro h1 { font-size: 2.65rem; }
  .workspace { border-left: 0; border-right: 0; margin-left: -10px; margin-right: -10px; }
  .workspace-head { align-items: flex-start; flex-direction: column; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .mapping-grid { grid-template-columns: 1fr; }
  .mapping-grid label:last-child { grid-column: auto; }
  .run-bar { grid-template-columns: 1fr; }
  .analyze-button { width: 100%; }
  .result-tabs { overflow-x: auto; }
  .tab-button { white-space: nowrap; }
  .how-grid { grid-template-columns: 1fr; }
  .how-step { border-right: 0; border-bottom: 1px solid var(--line-strong); }
  .how-step:last-child { border-bottom: 0; }
}

@media print {
  body { background: #fff; color: #111; font-family: Arial, sans-serif; }
  .tool-header, .tool-intro, .workspace, .how-it-works, .site-footer, .toast { display: none !important; }
  .print-report { display: block; padding: 0; }
  .print-head { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 2px solid #111; }
  .print-head h1 { margin: 0; font-size: 24px; }
  .print-head p { margin: 4px 0 0; color: #555; }
  .print-meta { text-align: right; font-size: 12px; }
  .print-table { width: 100%; margin-top: 20px; border-collapse: collapse; font-size: 10px; }
  .print-table th, .print-table td { padding: 7px 6px; border: 1px solid #777; text-align: left; vertical-align: top; }
  .print-table th { background: #e9e9e9; }
  .print-check { width: 48px; }
  @page { size: landscape; margin: 12mm; }
}