:root {
  --ink: #10212e;
  --muted: #5b6c76;
  --line: #d9e2e7;
  --surface: #ffffff;
  --surface-soft: #f4f8fa;
  --navy: #07131f;
  --blue: #0877bd;
  --blue-dark: #075a90;
  --teal: #08a6a0;
  --violet: #5847b8;
  --orange: #f08b32;
  --danger: #b84040;
  --shadow: 0 14px 36px rgba(7, 19, 31, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #edf3f5;
}

* { box-sizing: border-box; }

body { margin: 0; min-width: 320px; background: linear-gradient(180deg, #edf4f7 0%, #f8fbfc 55%, #edf3f5 100%); }

button, input { font: inherit; }
button { cursor: pointer; }
button:disabled, input:disabled { cursor: not-allowed; opacity: 0.55; }

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

.site-header { color: #fff; background: radial-gradient(circle at 85% 0%, #153c5d, transparent 38%), var(--navy); padding: 34px 0 40px; }
.header-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.brand-copy { min-width: 0; }
.brand-status { display: flex; flex: 0 0 auto; flex-direction: column; align-items: flex-end; gap: 12px; }
.brand-logo { display: block; width: clamp(92px, 13vw, 148px); height: auto; max-height: 96px; object-fit: contain; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 10px; font-size: clamp(2rem, 4vw, 3.65rem); line-height: 0.98; letter-spacing: -0.045em; max-width: 720px; }
h2 { margin-bottom: 0; font-size: clamp(1.1rem, 2vw, 1.45rem); letter-spacing: -0.02em; }
.subtitle { max-width: 680px; margin-bottom: 0; color: #c9dce9; font-size: clamp(0.98rem, 1.8vw, 1.14rem); line-height: 1.55; }
.eyebrow { margin-bottom: 9px; color: var(--teal); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.site-header .eyebrow { color: #65e1d9; }

.status-pill { flex: 0 0 auto; padding: 9px 13px; border: 1px solid rgba(255,255,255,0.18); border-radius: 999px; font-size: 0.8rem; font-weight: 750; white-space: nowrap; }
.status-loading { color: #ffe1a7; background: rgba(240, 139, 50, 0.14); }
.status-ready { color: #a8fff1; background: rgba(8, 166, 160, 0.16); }
.status-error { color: #ffb5b5; background: rgba(184, 64, 64, 0.18); }

.app-shell { display: grid; gap: 18px; padding: 22px 0 52px; }
.notice { padding: 14px 16px; color: #244354; border: 1px solid #b9dce4; border-radius: 14px; background: #e8f8fa; font-size: 0.92rem; line-height: 1.5; }
.card { border: 1px solid rgba(16, 33, 46, 0.08); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); }
.intake-card, .image-card, .settings-card, .results-card, .safety-card { padding: clamp(18px, 3vw, 28px); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.section-heading.compact { margin-bottom: 15px; }
.section-note { color: var(--muted); font-size: 0.84rem; }

.capture-actions, .result-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.button { min-height: 42px; padding: 10px 15px; border: 1px solid transparent; border-radius: 11px; font-weight: 750; transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease; }
a.button { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
.button:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 7px 16px rgba(7, 19, 31, 0.12); }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--blue), var(--blue-dark)); }
.button-secondary { color: #0a547f; border-color: #b8d6e5; background: #eff9fe; }
.button-quiet { color: #435963; border-color: var(--line); background: #f8fafb; }
.button-wide { width: 100%; margin-top: 18px; }
.file-button { display: inline-flex; align-items: center; justify-content: center; }
.file-button input { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.camera-panel { display: grid; place-items: center; margin-top: 16px; padding: 12px; border-radius: 14px; background: #06111c; }
#cameraVideo { display: block; width: min(100%, 560px); max-height: 420px; border-radius: 10px; object-fit: contain; background: #000; }
.camera-help { margin: 8px 0 0; color: #bcd1df; font-size: 0.8rem; text-align: center; }
.helper-text { margin: 13px 0 0; color: var(--muted); font-size: 0.82rem; line-height: 1.5; }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.8fr); gap: 18px; align-items: start; }
.canvas-stage { position: relative; display: grid; place-items: center; min-height: 360px; overflow: hidden; border: 1px solid #c9d8de; border-radius: 15px; background: #09121d; }
.canvas-stage.empty-stage { background: radial-gradient(circle, #182b3d, #07131f); }
#previewCanvas { display: block; width: 100%; max-height: 650px; object-fit: contain; touch-action: none; }
.empty-message { padding: 24px; color: #a8bdc9; text-align: center; }
.canvas-stage:not(.empty-stage) .empty-message { display: none; }
.roi-controls { display: grid; grid-template-columns: auto repeat(3, minmax(90px, 1fr)); gap: 12px; align-items: center; margin-top: 15px; }
.roi-controls label { display: grid; gap: 5px; color: var(--muted); font-size: 0.75rem; font-weight: 700; }
.roi-controls input { width: 100%; accent-color: var(--teal); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.form-grid label { display: grid; gap: 6px; color: var(--muted); font-size: 0.78rem; font-weight: 700; }
.form-grid input { width: 100%; min-height: 41px; padding: 9px 10px; color: var(--ink); border: 1px solid #c9d8de; border-radius: 10px; background: #fbfdfe; }
.form-grid input:focus { outline: 3px solid rgba(8, 166, 160, 0.17); border-color: var(--teal); }
.quality-note { margin-top: 17px; padding: 13px; color: #5d4a23; border: 1px solid #f0d79d; border-radius: 13px; background: #fff8e9; font-size: 0.8rem; line-height: 1.45; }
.quality-note strong { color: #8a611e; }
.quality-note p { margin: 5px 0 0; }

.quality-banner { display: grid; gap: 4px; margin-bottom: 18px; padding: 12px 14px; border-radius: 12px; color: #29506a; background: #eef8fb; font-size: 0.86rem; line-height: 1.45; }
.quality-banner.warning { color: #704b1b; background: #fff8e8; }
.results-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(250px, 0.9fr); gap: 22px; }
.descriptor-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.descriptor { min-height: 86px; padding: 13px; border: 1px solid #dce6ea; border-radius: 13px; background: #fbfdfe; }
.descriptor-label { color: var(--muted); font-size: 0.76rem; line-height: 1.3; }
.descriptor-value { margin-top: 7px; color: var(--navy); font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 800; letter-spacing: -0.03em; }
.descriptor-unit { color: var(--muted); font-size: 0.75rem; font-weight: 600; }
.metadata-summary { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 14px; color: var(--muted); font-size: 0.78rem; }
.metadata-summary span { padding: 7px 9px; border-radius: 8px; background: #f2f6f8; }
.diagnostic-column { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.diagnostic-column figure { margin: 0; overflow: hidden; border: 1px solid #dce6ea; border-radius: 12px; background: #07131f; }
.diagnostic-column figure:first-child { grid-column: 1 / -1; }
.diagnostic-column canvas { display: block; width: 100%; aspect-ratio: 1.28; object-fit: contain; }
.diagnostic-column figcaption { padding: 8px 9px; color: #526671; background: #fff; font-size: 0.75rem; }
.method-details { margin-top: 18px; color: var(--muted); font-size: 0.84rem; line-height: 1.6; }
.method-details summary { color: var(--ink); cursor: pointer; font-weight: 750; }
.method-details p { margin: 10px 0 0; }

.safety-card h2 { margin-bottom: 15px; }
.guidance-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.guidance-grid p { display: flex; gap: 10px; margin: 0; color: var(--muted); font-size: 0.84rem; line-height: 1.5; }
.guidance-icon { display: grid; flex: 0 0 30px; place-items: center; height: 30px; color: #fff; border-radius: 9px; background: var(--violet); font-size: 0.68rem; font-weight: 800; }

.site-footer { padding: 22px 0 30px; color: #6b7d87; font-size: 0.78rem; text-align: center; }

@media (max-width: 820px) {
  .header-inner, .section-heading { flex-direction: column; }
  .workspace-grid, .results-layout { grid-template-columns: 1fr; }
  .brand-status { align-items: flex-start; }
  .status-pill { align-self: flex-start; }
  .roi-controls { grid-template-columns: 1fr 1fr; }
  .roi-controls button { grid-column: 1 / -1; }
  .guidance-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .wrap { width: min(100% - 20px, 1180px); }
  .site-header { padding-top: 24px; }
  .app-shell { padding-top: 12px; }
  .intake-card, .image-card, .settings-card, .results-card, .safety-card { padding: 16px; border-radius: 16px; }
  .capture-actions .button { width: 100%; }
  .form-grid, .descriptor-grid { grid-template-columns: 1fr; }
  .canvas-stage { min-height: 280px; }
  .diagnostic-column { grid-template-columns: 1fr; }
  .diagnostic-column figure:first-child { grid-column: auto; }
  .result-actions { width: 100%; }
  .result-actions .button { flex: 1; }
}