/* Papers Radar design system — no external assets, light+dark, responsive. */

:root {
  --bg: #f6f8fc;
  --bg-elev: #ffffff;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --line: #e2e8f0;
  --brand: #2563eb;
  --brand-2: #7c3aed;
  --brand-soft: #eef2ff;
  --brand-soft-text: #3730a3;
  --ok: #059669;
  --warn: #d97706;
  --bad: #dc2626;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-line: rgba(255, 255, 255, 0.55);
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-elev: #111a2e;
    --text: #e2e8f0;
    --text-2: #94a3b8;
    --text-3: #64748b;
    --line: #1e293b;
    --brand: #60a5fa;
    --brand-2: #a78bfa;
    --brand-soft: #1e2a4a;
    --brand-soft-text: #c7d2fe;
    --glass: rgba(17, 26, 46, 0.66);
    --glass-line: rgba(148, 163, 184, 0.18);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.015em; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 640px; margin: 0 auto; padding: 0 20px; }

/* --- header ---------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--glass);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.logo { font-weight: 800; font-size: 19px; color: var(--text); letter-spacing: -0.02em; }
.logo:hover { text-decoration: none; }
.logo .dot {
  display: inline-block; width: 10px; height: 10px; border-radius: 99px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  margin-right: 7px;
}
.nav { margin-left: auto; display: flex; align-items: center; gap: 16px; font-size: 14.5px; }
.nav a { color: var(--text-2); font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }

/* --- buttons & forms ------------------------------------------------------- */
.btn {
  display: inline-block; border: 0; cursor: pointer; font: inherit;
  font-weight: 600; font-size: 15px; border-radius: 10px; padding: 10px 20px;
  color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: var(--shadow); transition: transform .12s ease, filter .12s ease;
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); text-decoration: none; color: #fff; }
.btn-lg { padding: 14px 28px; font-size: 16.5px; border-radius: 12px; }
.btn-ghost {
  background: transparent; color: var(--text); border: 1px solid var(--line);
  box-shadow: none;
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-3); filter: none; }
input[type=text], input[type=email], textarea, select {
  width: 100%; font: inherit; color: var(--text);
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent;
}
textarea { resize: vertical; min-height: 110px; }
label { font-weight: 600; font-size: 14px; display: block; margin: 16px 0 6px; }
.hint { color: var(--text-2); font-size: 13.5px; margin-top: 5px; }
.field-note {
  background: var(--brand-soft); color: var(--brand-soft-text);
  border-radius: 10px; padding: 10px 14px; font-size: 13.5px; margin: 10px 0;
}

/* --- panels & cards -------------------------------------------------------- */
.panel {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 26px 28px; margin: 18px 0;
}
.notice { border-left: 4px solid var(--ok); background: var(--bg-elev);
  padding: 10px 16px; border-radius: 8px; margin: 12px 0; }
.error { border-left: 4px solid var(--bad); background: var(--bg-elev);
  padding: 10px 16px; border-radius: 8px; margin: 12px 0; }

.card {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px 24px; margin: 0 0 16px;
}
.card h2 { font-size: 17.5px; margin-bottom: 4px; }
.card h2 a { color: var(--text); }
.card h2 a:hover { color: var(--brand); text-decoration: none; }
.card .meta { color: var(--text-2); font-size: 13.5px; margin-bottom: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--brand-soft); color: var(--brand-soft-text);
  border-radius: 99px; padding: 3px 12px; font-size: 12.5px; font-weight: 700;
}
.chip a { color: inherit; }
.card .why { font-style: italic; color: var(--text-2); font-size: 14.5px; margin: 10px 0 6px; }
.card .abstract { color: var(--text-2); font-size: 14px; margin-top: 8px; }
.card details summary { cursor: pointer; color: var(--brand); font-size: 13.5px; }
.card-foot { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.vote {
  border: 1px solid var(--line); background: transparent; border-radius: 8px;
  font-size: 16px; padding: 4px 12px; cursor: pointer; color: var(--text-3);
  transition: all .12s ease;
}
.vote:hover { border-color: var(--text-3); }
.vote.on.up { background: #dcfce7; border-color: var(--ok); color: var(--ok); }
.vote.on.down { background: #fee2e2; border-color: var(--bad); color: var(--bad); }
@media (prefers-color-scheme: dark) {
  .vote.on.up { background: rgba(5, 150, 105, .18); }
  .vote.on.down { background: rgba(220, 38, 38, .18); }
}
.vote-note { color: var(--text-3); font-size: 12.5px; }

/* --- landing ---------------------------------------------------------------- */
.hero {
  position: relative; overflow: hidden; text-align: center;
  padding: 88px 20px 72px;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 999px; filter: blur(90px);
  opacity: .35; z-index: 0; pointer-events: none;
}
.hero::before {
  width: 560px; height: 560px; left: -160px; top: -220px;
  background: radial-gradient(circle, var(--brand), transparent 65%);
}
.hero::after {
  width: 520px; height: 520px; right: -140px; top: -120px;
  background: radial-gradient(circle, var(--brand-2), transparent 65%);
}
.hero > * { position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(34px, 6vw, 56px); font-weight: 800; max-width: 760px;
  margin: 14px auto 0;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .sub {
  color: var(--text-2); font-size: clamp(16px, 2.4vw, 19px);
  max-width: 640px; margin: 18px auto 30px;
}
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--brand);
  background: var(--brand-soft); border-radius: 99px; padding: 5px 14px;
}
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.section { padding: 56px 0; }
.section h2 { font-size: clamp(24px, 3.6vw, 32px); text-align: center; margin-bottom: 8px; }
.section .lead { text-align: center; color: var(--text-2); max-width: 620px; margin: 0 auto 36px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 800px) { .grid3 { grid-template-columns: 1fr; } }
.feature {
  background: var(--glass); border: 1px solid var(--glass-line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px;
}
.feature .icon { font-size: 26px; margin-bottom: 10px; }
.feature h3 { font-size: 17px; margin-bottom: 6px; }
.feature p { color: var(--text-2); font-size: 14.5px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding: 26px 24px 24px; background: var(--bg-elev);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.step::before {
  counter-increment: step; content: counter(step);
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 99px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  margin-bottom: 12px;
}
.step h3 { font-size: 16.5px; margin-bottom: 6px; }
.step p { color: var(--text-2); font-size: 14.5px; }

.quote {
  max-width: 680px; margin: 0 auto; text-align: center;
  background: var(--glass); border: 1px solid var(--glass-line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px 34px 26px;
}
.quote blockquote { font-size: 18.5px; font-weight: 500; }
.quote .who { color: var(--text-2); font-size: 14px; margin-top: 14px; }

.cta-band {
  text-align: center; border-radius: 20px; margin: 20px 0 56px; padding: 48px 24px;
  color: #fff; background: linear-gradient(120deg, var(--brand), var(--brand-2));
}
.cta-band h2 { font-size: clamp(22px, 3.4vw, 30px); margin-bottom: 8px; }
.cta-band p { opacity: .9; margin-bottom: 22px; }
.cta-band .btn { background: #fff; color: var(--brand); }

/* --- onboarding progress ---------------------------------------------------- */
.progress { display: flex; gap: 8px; margin: 26px 0 8px; }
.progress span { flex: 1; height: 6px; border-radius: 99px; background: var(--line); }
.progress span.done { background: linear-gradient(90deg, var(--brand), var(--brand-2)); }
.step-label { color: var(--text-2); font-size: 13.5px; margin-bottom: 14px; }
.seed-row {
  display: flex; align-items: baseline; gap: 10px; padding: 10px 0;
  border-bottom: 1px solid var(--line); font-size: 14.5px;
}
.seed-row:last-child { border-bottom: 0; }
.seed-row .t { flex: 1; }
.seed-row .v { color: var(--text-3); font-size: 12.5px; white-space: nowrap; }
.seed-row button { background: none; border: 0; color: var(--bad); cursor: pointer; font-size: 15px; }

/* --- tables (admin) --------------------------------------------------------- */
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--text-2); font-weight: 600; white-space: nowrap; }
.status-ok { color: var(--ok); font-weight: 600; }
.status-error { color: var(--bad); font-weight: 600; }
.status-running { color: var(--warn); font-weight: 600; }
code { background: var(--brand-soft); color: var(--brand-soft-text);
  border-radius: 6px; padding: 1px 6px; font-size: 12.5px; }

/* --- misc ------------------------------------------------------------------- */
.page-title { font-size: 26px; margin: 30px 0 4px; }
.page-sub { color: var(--text-2); margin-bottom: 18px; }
.empty {
  text-align: center; padding: 60px 24px; color: var(--text-2);
  background: var(--bg-elev); border: 1px dashed var(--line); border-radius: var(--radius);
}
.empty .big { font-size: 34px; margin-bottom: 10px; }
.site-footer { color: var(--text-3); font-size: 13px; text-align: center; padding: 36px 0 30px; }
.datebar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 8px 0 20px; }
.datebar a, .datebar span.cur {
  font-size: 13.5px; border: 1px solid var(--line); border-radius: 99px; padding: 4px 13px;
}
.datebar span.cur { background: var(--brand-soft); color: var(--brand-soft-text);
  border-color: transparent; font-weight: 700; }