:root {
  --colour-blue: #266FFF;
  --colour-dark-blue: #0A1E5A;
  --colour-light-blue: #5ABEFA;
  --colour-grey: #333333;
  --colour-mid-grey: #666666;
  --colour-light-grey: #E6E6E6;
  --colour-white: #FFFFFF;

  --font-heading: 'Roboto', 'Open Sans', 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Open Sans', 'Roboto', 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --good: #1e8e3e;
  --avg: #b06000;
  --poor: #c5221f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--colour-grey);
  background: var(--colour-white);
  line-height: 1.55;
}

h1, h2, h3 { font-family: var(--font-heading); }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--colour-dark-blue) 0%, #12308f 70%, var(--colour-blue) 130%);
  color: var(--colour-white);
  padding: 40px 20px 56px;
}
.hero-inner { max-width: 860px; margin: 0 auto; text-align: center; }
.brand img { display: inline-block; }
.hero h1 { font-size: 2.4rem; margin: 18px 0 6px; font-weight: 700; }
.tagline { color: #d8e4ff; margin: 0 auto 26px; max-width: 620px; }

#test-form { display: flex; gap: 10px; max-width: 640px; margin: 0 auto; }
#url-input {
  flex: 1;
  padding: 13px 16px;
  border: 1px solid var(--colour-light-grey);
  border-radius: 6px;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--colour-grey);
}
#url-input:focus { outline: 3px solid var(--colour-light-blue); border-color: var(--colour-light-blue); }
#submit-btn {
  padding: 13px 26px;
  background: var(--colour-blue);
  color: var(--colour-white);
  border: 0;
  border-radius: 6px;
  font-size: 1rem;
  font-family: var(--font-heading);
  font-weight: 500;
  cursor: pointer;
}
#submit-btn:hover { background: #1d5ed9; }
#submit-btn:disabled { opacity: 0.6; cursor: wait; }

.status { margin: 18px auto 0; max-width: 640px; color: #d8e4ff; }
.status[data-kind="error"] {
  color: var(--colour-white);
  background: rgba(197, 34, 31, 0.55);
  border-radius: 6px;
  padding: 10px 14px;
}

/* Main */
main { max-width: 1060px; margin: 0 auto; padding: 34px 20px 60px; }
section { margin-bottom: 44px; }
section h2 { color: var(--colour-dark-blue); font-size: 1.45rem; margin: 0 0 4px; overflow-wrap: anywhere; }
.section-note { color: var(--colour-mid-grey); margin: 0 0 16px; font-size: 0.92rem; }
.result-head { margin-bottom: 16px; }
.meta { color: var(--colour-mid-grey); font-size: 0.92rem; overflow-wrap: anywhere; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 16px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: var(--colour-white);
  border: 1px solid var(--colour-light-grey);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 1px 3px rgba(10, 30, 90, 0.06);
}
.card h3 {
  margin: 0 0 12px;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--colour-mid-grey);
}

.big-score { font-family: var(--font-heading); font-size: 3.4rem; font-weight: 700; text-align: center; color: var(--colour-dark-blue); }
.good { color: var(--good); }
.avg { color: var(--avg); }
.poor { color: var(--poor); }

/* Timing bars */
.bar-row { display: grid; grid-template-columns: 80px 1fr 74px; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 0.9rem; }
.bar-label { color: var(--colour-mid-grey); }
.bar-track { background: #f2f5fb; border-radius: 4px; height: 12px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: linear-gradient(90deg, var(--colour-blue), var(--colour-light-blue)); border-radius: 4px; }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
td, th { padding: 8px 10px; border-bottom: 1px solid var(--colour-light-grey); text-align: left; }
th { color: var(--colour-mid-grey); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
tr:last-child td { border-bottom: 0; }
.url-cell { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
tr.you td { background: #eef4ff; font-weight: 600; }
tr.you .url-cell::after { content: " (your test)"; color: var(--colour-blue); font-weight: 600; }

.shot-card img { width: 100%; border: 1px solid var(--colour-light-grey); border-radius: 6px; }

/* Footer */
footer { background: var(--colour-dark-blue); color: var(--colour-white); padding: 30px 20px; }
.footer-inner { max-width: 1060px; margin: 0 auto; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.footer-inner p { margin: 0; font-size: 0.92rem; }
footer a { color: var(--colour-light-blue); }

@media (max-width: 560px) {
  #test-form { flex-direction: column; }
  .hero h1 { font-size: 1.9rem; }
}

/* Share button */
#share-btn {
  margin-top: 10px;
  padding: 8px 16px;
  background: var(--colour-white);
  color: var(--colour-blue);
  border: 1px solid var(--colour-blue);
  border-radius: 6px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
}
#share-btn:hover { background: #eef4ff; }

/* Detailed analytics */
.details-card { padding: 0; }
.details-card summary {
  padding: 16px 18px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--colour-dark-blue);
  list-style-position: inside;
}
.details-card summary:hover { color: var(--colour-blue); }
.details-body { padding: 4px 18px 18px; }
.details-body h3 {
  margin: 18px 0 10px;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--colour-mid-grey);
}
.details-body table { font-size: 0.88rem; }

/* Dual-device scores and screenshots */
.score-pair { display: flex; justify-content: space-around; gap: 10px; }
.score-pair > div { text-align: center; }
.device-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--colour-mid-grey);
  margin-bottom: 4px;
}
.score-pair .big-score { font-size: 2.6rem; }
.shot-mobile { max-width: 280px; margin: 0 auto; display: block; }
.delta { color: var(--colour-blue); font-weight: 600; }
.details-body .grid { margin-top: 4px; }

/* Test progress bar */
.progress { max-width: 640px; margin: 20px auto 0; text-align: left; }
.progress-track {
  height: 10px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--colour-light-blue), var(--colour-blue));
  background-size: 200% 100%;
  animation: progress-sheen 1.6s linear infinite;
  transition: width 0.5s ease;
}
@keyframes progress-sheen {
  0% { background-position: 0% 0; }
  100% { background-position: -200% 0; }
}
.progress-row {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.9rem;
  color: #d8e4ff;
}
#progress-pct { font-variant-numeric: tabular-nums; }

/* No white band before results: footer hugs the hero while main is empty. */
body { min-height: 100vh; display: flex; flex-direction: column; }
main { width: 100%; }
main:not(:has(section:not([hidden]))) { padding: 0; }
footer { margin-top: auto; }

/* While there are no results, the hero gradient fills the page instead of a
   white void between hero and footer. (:has() cannot nest inside :has().) */
body:not(:has(main section:not([hidden]))) .hero { flex: 1 1 auto; }