/* Prova upload — drag-drop ramp. Same brand as prova.network */

:root {
  --line:    rgba(180, 192, 202, 0.10);
  --line-2:  rgba(180, 192, 202, 0.20);

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Helvetica Neue", Helvetica, Arial, "Inter", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono",
          "Courier New", monospace;
  --serif: "New York", "Iowan Old Style", Charter, "Hoefler Text", Georgia,
           "Times New Roman", serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  width: 100%;
  background: #0a0c0f;
  color: #b6bdc4;
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  --bg:        #0a0c0f;
  --bg-2:      #0e1116;
  --ink-1:     #11141a;
  --ash-1:     #6e7780;
  --ash-2:     #8a939c;
  --ash-3:     #b6bdc4;
  --type-soft: #aab3ba;
  --type-loud: #e8edf1;
  --accent:    #5dc3e5;
  --accent-soft: rgba(93, 195, 229, 0.12);
  --hair: rgba(180, 192, 202, 0.10);
  --hair-strong: rgba(180, 192, 202, 0.22);
  --diag-bg: rgba(20, 24, 30, 0.55);
  --diag-stroke: rgba(200, 214, 223, 0.22);
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 50% -10%, rgba(93,195,229,0.08) 0%, rgba(93,195,229,0) 45%),
    #0a0c0f;
}

a { color: inherit; }

/* ── Top bar ─────────────────────────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(20px, 4vw, 48px);
}
.lockup {
  display: inline-flex; align-items: center; gap: 12px;
  text-decoration: none;
  color: var(--type-loud);
}
.lockup .mark { width: 26px; height: 26px; color: var(--type-loud); }
.lockup .wordmark {
  font-family: var(--sans);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.back {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--type-soft);
  text-decoration: none;
  letter-spacing: 0.06em;
  padding: 8px 12px;
  border: 1px solid var(--hair-strong);
  border-radius: 999px;
}
.back:hover { color: var(--type-loud); border-color: var(--type-loud); }

/* ── Main ────────────────────────────────────────────────────────────────── */
main {
  max-width: 880px;
  margin: 0 auto;
  padding: 56px clamp(20px, 4vw, 48px) 80px;
}

.hero {
  margin: 24px 0 48px;
  text-align: left;
}
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--type-soft);
  margin: 0 0 18px;
  display: inline-flex; align-items: center; gap: 10px;
}
.kicker .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(93,195,229,0.45); }
  70%  { box-shadow: 0 0 0 9px rgba(93,195,229,0); }
  100% { box-shadow: 0 0 0 0 rgba(93,195,229,0); }
}
.hero h1 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--type-loud);
  margin: 0 0 24px 0;
}
.hero h1 em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.hero .lead {
  color: var(--type-soft);
  font-size: 17px;
  line-height: 1.55;
  max-width: 56ch;
  margin: 0;
}

/* ── Drop zone ───────────────────────────────────────────────────────────── */
.drop-stage { margin: 32px 0 64px; }
.drop {
  position: relative;
  border: 1.5px dashed var(--hair-strong);
  border-radius: 22px;
  padding: 72px 32px;
  background: var(--diag-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-align: center;
  cursor: pointer;
  transition: border-color 200ms var(--ease-out), background 200ms var(--ease-out);
}
.drop:hover, .drop.is-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.drop.is-over { transform: scale(1.005); }
.drop-icon {
  width: 56px; height: 56px;
  color: var(--accent);
  margin: 0 auto 16px;
}
.drop-title {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--type-loud);
  margin: 0 0 8px;
}
.drop-hint {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--type-soft);
  margin: 0;
}
.link-btn {
  background: none; border: none; padding: 0;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
}
.link-btn:hover { color: var(--type-loud); }

/* ── Progress ────────────────────────────────────────────────────────────── */
.progress, .result, .error { margin: 32px 0 64px; }
.progress.hidden, .result.hidden, .error.hidden { display: none; }
.progress-card, .result-card, .error-card {
  background: var(--diag-bg);
  border: 1px solid var(--diag-stroke);
  border-radius: 22px;
  padding: 36px 32px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash-1);
  margin: 0 0 8px;
}
.progress-card h3, .result-card h3, .error-card h3 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.018em;
  color: var(--type-loud);
  margin: 0 0 8px;
}
.progress-sub {
  color: var(--type-soft);
  font-size: 14.5px;
  margin: 0 0 22px;
}
.progress-bar {
  height: 4px;
  background: var(--hair);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 28px;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.4s var(--ease-out);
}
.steps {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 12px;
}
.steps li {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ash-1);
}
.steps li .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--ink-1);
  border: 1.5px solid var(--hair-strong);
  flex-shrink: 0;
}
.steps li.is-active { color: var(--type-loud); }
.steps li.is-active .dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.steps li.is-done { color: var(--type-soft); }
.steps li.is-done .dot {
  background: var(--accent);
  border-color: var(--accent);
}

/* ── Result ──────────────────────────────────────────────────────────────── */
.kv {
  margin: 0 0 28px;
  display: grid;
  gap: 12px;
}
.kv > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: baseline;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px solid var(--hair);
}
.kv > div:last-child { border-bottom: none; }
.kv dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash-1);
}
.kv dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--type-loud);
  word-break: break-all;
}
.kv dd code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--type-loud);
}
.kv dd a {
  color: var(--accent);
  text-decoration: none;
}
.kv dd a:hover { text-decoration: underline; }
.copy {
  background: none; border: none; cursor: pointer;
  color: var(--ash-1); padding: 0 0 0 8px;
  font-size: 14px;
}
.copy:hover { color: var(--accent); }

.result-actions {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  margin-bottom: 18px;
}
.cta {
  display: inline-flex; align-items: center;
  font-family: var(--sans);
  font-size: 13px; font-weight: 500;
  background: var(--type-loud);
  color: var(--bg);
  padding: 11px 22px;
  border-radius: 999px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity 200ms ease;
}
.cta:hover { opacity: 0.92; }
.cta-quiet {
  background: none; border: none; cursor: pointer;
  font-family: var(--sans);
  font-size: 13px; font-weight: 500;
  color: var(--type-soft);
  padding: 11px 4px;
}
.cta-quiet:hover { color: var(--type-loud); }
.result-note {
  margin: 16px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--type-soft);
}
.result-note a { color: var(--accent); text-decoration: none; }
.result-note a:hover { text-decoration: underline; }

/* ── Explainer ───────────────────────────────────────────────────────────── */
.explainer {
  margin-top: 64px;
  padding: 32px;
  border: 1px solid var(--hair);
  border-radius: 22px;
}
.explainer ol {
  padding-left: 22px;
  margin: 16px 0;
  color: var(--type-soft);
  font-size: 15px;
  line-height: 1.65;
}
.explainer ol li { margin-bottom: 10px; }
.explainer ol code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--type-loud);
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 4px;
}
.explainer-foot {
  margin: 12px 0 0;
  color: var(--ash-2);
  font-size: 13px;
}
.explainer-foot a { color: var(--accent); text-decoration: none; }
.explainer-foot a:hover { text-decoration: underline; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer.site {
  border-top: 1px solid var(--hair);
  padding: 28px clamp(20px, 4vw, 48px);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ash-1);
  flex-wrap: wrap; gap: 12px;
}
footer.site a { color: var(--type-soft); text-decoration: none; }
footer.site a:hover { color: var(--type-loud); }

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .hero h1 { font-size: 36px; }
  .drop { padding: 56px 24px; }
  .kv > div { grid-template-columns: 1fr; gap: 4px; }
  .kv dt { font-size: 10px; }
}