:root {
  --ink: #16233B;
  --paper: #EEEDE6;
  --rule: #C9CABD;
  --signal-red: #B23B2E;
  --signal-teal: #29695A;
  --accent-gold: #C08A28;
  --font-serif: "IBM Plex Serif", Georgia, serif;
  --font-sans: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 20px;
  margin-bottom: 48px;
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.wordmark span {
  color: var(--accent-gold);
}

.tagline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #6a6c60;
  letter-spacing: 0.02em;
}

.hero {
  margin-bottom: 56px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 1.05rem;
  color: #3d3f36;
  max-width: 56ch;
}

.report {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.report-step {
  border-top: 1px solid var(--rule);
  padding-top: 28px;
}

.step-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-gold);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.report-step h2 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.hidden {
  display: none;
}

label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #565850;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 16px;
  margin-bottom: 6px;
}

select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
}

select:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 1px;
}

.file-drop {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px dashed var(--rule);
  border-radius: 4px;
  padding: 28px 16px;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.15s;
}

.file-drop:hover {
  border-color: var(--accent-gold);
}

.file-drop input[type="file"] {
  display: none;
}

#fileDropText {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: #6a6c60;
}

.btn-primary {
  margin-top: 22px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 13px 26px;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover {
  background: #253552;
}

.btn-primary:disabled {
  background: #9a9c92;
  cursor: not-allowed;
}

.status-line {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.status-ok {
  color: var(--signal-teal);
}

.status-error {
  color: var(--signal-red);
}

.privacy-note {
  margin-top: 16px;
  font-size: 0.78rem;
  color: #8a8c80;
}

#resultsOutput {
  font-size: 0.95rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.result-row:last-child {
  border-bottom: none;
}

.result-label {
  color: #6a6c60;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 0.75rem;
}

.result-value {
  font-weight: 600;
  color: var(--ink);
}

.result-value.significant {
  color: var(--signal-red);
}

.result-value.not-significant {
  color: var(--signal-teal);
}

.gauge-wrap {
  margin: 20px 0 8px;
}

.gauge-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #6a6c60;
  margin-bottom: 6px;
}

.gauge-track {
  position: relative;
  height: 8px;
  background: #ddd8c8;
  border-radius: 4px;
}

.gauge-threshold {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: var(--ink);
}

.gauge-threshold::after {
  content: "p=.05";
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: #6a6c60;
  white-space: nowrap;
}

.gauge-dot {
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid var(--paper);
}

.gauge-dot.significant {
  background: var(--signal-red);
}

.gauge-dot.not-significant {
  background: var(--signal-teal);
}

.assumption-box {
  background: #fff;
  border-left: 3px solid var(--accent-gold);
  padding: 14px 16px;
  margin-top: 18px;
  border-radius: 0 4px 4px 0;
  font-size: 0.86rem;
}

.assumption-box strong {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #565850;
  display: block;
  margin-bottom: 8px;
}

.apa-box {
  background: var(--ink);
  color: var(--paper);
  padding: 14px 16px;
  border-radius: 4px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.site-footer {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-size: 0.8rem;
  color: #8a8c80;
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 1.9rem;
  }
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

.lang-btn {
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 3px;
  cursor: pointer;
  letter-spacing: 0.04em;
}

.lang-btn:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}