/* Sapphire OS hackathon frontend — single stylesheet, no JS frameworks. */

:root {
  --bg: #0a0e14;
  --bg-2: #10151d;
  --panel: #131922;
  --panel-2: #1a2230;
  --border: #25303e;
  --border-soft: #1e2733;
  --ink: #e7ecf3;
  --ink-muted: #97a3b6;
  --ink-faint: #5f6c80;
  --accent: #4f8bff;
  --accent-2: #7b61ff;     /* 0G purple */
  --green: #3fb950;
  --yellow: #d4a000;
  --orange: #d97706;
  --red: #f0506b;

  /* Per-submission accents */
  --c-0g: #7b61ff;
  --c-megaeth: #38bdf8;
  --c-robinhood: #00c805;  /* Robinhood green */
  --c-zama: #ffd84d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 12.5px;
  background: var(--bg-2);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--ink);
}

/* ---------------- Hero ---------------- */
.hero {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0d1320 0%, var(--bg) 100%);
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 32px 48px;
}
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 14px;
}
.hero-title {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 20px;
}
.hero-pitch {
  font-size: 17px;
  color: var(--ink-muted);
  max-width: 780px;
  margin: 0 0 24px;
}
.hero-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink-faint);
}
.hero-link { color: var(--accent); }
.hero-link.muted { color: var(--ink-faint); }
.hero-dot { margin: 0 8px; color: var(--ink-faint); }

/* ---------------- Cards grid ---------------- */
.cards {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 24px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
}
.card-0g::before       { background: var(--c-0g); }
.card-megaeth::before  { background: var(--c-megaeth); }
.card-robinhood::before{ background: var(--c-robinhood); }
.card-zama::before     { background: var(--c-zama); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.card-sponsor {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.card-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}
.card-subtitle {
  color: var(--ink-muted);
  font-size: 14px;
}

/* status pill */
.status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid;
  white-space: nowrap;
}
.status-submitted { color: var(--green); border-color: rgba(63,185,80,0.4); background: rgba(63,185,80,0.08); }
.status-live      { color: var(--accent); border-color: rgba(79,139,255,0.4); background: rgba(79,139,255,0.08); }
.status-draft     { color: var(--yellow); border-color: rgba(212,160,0,0.4); background: rgba(212,160,0,0.08); }

.card-track {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
  margin: 16px 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-soft);
}

.card-pitch {
  margin: 0 0 16px;
  color: var(--ink);
}

.card-bullets {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}
.card-bullets li {
  position: relative;
  padding: 4px 0 4px 18px;
  color: var(--ink-muted);
  font-size: 14px;
}
.card-bullets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
}

/* ---------------- Card sections ---------------- */
.card-section { margin-bottom: 18px; }
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.contract {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border-soft);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
}
.contract:last-child { border-bottom: none; }
.contract-name { color: var(--accent); }
.contract-net  { color: var(--ink-faint); font-size: 11.5px; }

.pr-list { display: flex; flex-direction: column; gap: 4px; }
.pr {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-radius: 5px;
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
}
.pr:hover { border-color: var(--accent); text-decoration: none; }
.pr-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  min-width: 48px;
}
.pr-label { color: var(--ink-muted); }

.code-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.code-list li {
  padding: 2px 0;
}
.code-list code {
  font-size: 11.5px;
  background: transparent;
  color: var(--ink-muted);
  padding: 0;
}

/* ---------------- Card footer ---------------- */
.card-foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.live-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.dot-submitted { background: var(--green); box-shadow: 0 0 0 3px rgba(63,185,80,0.15); }
.dot-live      { background: var(--accent); box-shadow: 0 0 0 3px rgba(79,139,255,0.15); }
.dot-draft     { background: var(--yellow); box-shadow: 0 0 0 3px rgba(212,160,0,0.15); }

.demo-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 5px;
  font-weight: 500;
  white-space: nowrap;
}
.demo-btn:hover { text-decoration: none; opacity: 0.9; }

/* ---------------- Page footer ---------------- */
.page-foot {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding: 40px 32px 24px;
}
.foot-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}
.foot-col { color: var(--ink-muted); font-size: 14px; }
.foot-col a { color: var(--accent); }
.foot-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.foot-fine {
  max-width: 1100px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--ink-faint);
  text-align: center;
}
.foot-fine code { font-size: 11px; }

/* ---------------- Hero hint ---------------- */
.hero-hint {
  margin-top: 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
}
.hint-dot { color: var(--accent); margin-right: 6px; }

/* ---------------- Expandable card (details/summary) ---------------- */
.card[open] {
  background: var(--panel-2);
  border-color: var(--accent);
}
.card-summary {
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.card-summary::-webkit-details-marker { display: none; }
.card-summary::marker { content: ""; }

.card-pitch-muted {
  color: var(--ink-muted) !important;
  font-size: 14px;
  margin-bottom: 14px !important;
}

.card-summary-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}
.expand-cue {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.card[open] .expand-cue::after { content: " (open)"; color: var(--accent); }

.card-body {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
}

/* ---------------- Tabs ---------------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 0;
}
.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--ink-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 5px 5px 0 0;
  margin-bottom: -1px;
  letter-spacing: 0.04em;
}
.tab-btn:hover { color: var(--ink); background: var(--bg-2); }
.tab-btn.active {
  color: var(--ink);
  background: var(--bg-2);
  border-color: var(--border-soft);
  border-bottom-color: var(--bg-2);
  font-weight: 500;
}

.tab-pane { display: none; animation: fadeIn 0.15s ease-in; }
.tab-pane.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tab-blurb {
  color: var(--ink-muted);
  font-size: 14px;
  margin: 4px 0 14px;
}
.big-pitch {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 16px;
  line-height: 1.4;
}

/* ---------------- Live probe widget ---------------- */
.probe-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 5px;
  border: none;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: 16px;
}
.probe-btn:disabled { opacity: 0.5; cursor: wait; }
.probe-btn:hover:not(:disabled) { opacity: 0.9; }

.probe-results { display: flex; flex-direction: column; gap: 12px; }
.probe-row {
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  padding: 12px 14px;
}
.probe-row-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}
.probe-name { color: var(--accent); font-weight: 500; font-size: 13px; }
.probe-net { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-faint); }
.probe-addr code {
  font-size: 11.5px;
  color: var(--ink);
  background: transparent;
  padding: 0;
  word-break: break-all;
}
.probe-addr code.muted { color: var(--ink-faint); }
.probe-status {
  margin-top: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  line-height: 1.4;
}
.probe-status.muted { color: var(--ink-faint); }
.probe-status.ok    { color: var(--green); }
.probe-status.err   { color: var(--red); }
.probe-status code {
  background: transparent;
  font-size: 11px;
  color: inherit;
  padding: 0;
}
.probe-tick { display: inline-block; width: 14px; }
.probe-tick.err { color: var(--red); }
.probe-tick.muted { color: var(--ink-faint); }

/* ---------------- KV list (deck-like) ---------------- */
.kv-list { list-style: none; margin: 0 0 16px; padding: 0; }
.kv-list li {
  display: flex;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-soft);
  font-size: 13.5px;
}
.kv-list li:last-child { border-bottom: none; }
.kv-k {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-width: 110px;
}
.kv-v { color: var(--ink); flex: 1; }
.kv-v a { color: var(--accent); }

/* ---------------- Criteria list ---------------- */
.criteria-list { display: flex; flex-direction: column; gap: 14px; }
.criterion {
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 12px 14px;
}
.criterion-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 6px;
}
.criterion-verbatim {
  color: var(--ink-muted);
  font-style: italic;
  font-size: 13px;
  margin-bottom: 8px;
  padding: 4px 0;
}
.quote-mark {
  color: var(--ink-faint);
  font-size: 16px;
  font-weight: 500;
}
.criterion-match {
  font-size: 13.5px;
  color: var(--ink);
}
.match-tick {
  color: var(--green);
  font-weight: 700;
  margin-right: 4px;
}

/* ---------------- Video embed placeholder ---------------- */
.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 16px;
}
.video-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.placeholder {
  background: var(--bg-2);
  border: 1px dashed var(--border-soft);
  border-radius: 6px;
  padding: 14px 16px;
  color: var(--ink-muted);
  font-size: 13px;
}
.placeholder code { font-size: 11.5px; }

/* ---------------- Roadmap list ---------------- */
.roadmap-list li {
  padding-left: 22px;
}
.roadmap-list li::before {
  content: "→";
  font-weight: 700;
}

/* ---------------- CTA buttons ---------------- */
.card-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}
.cta-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 5px;
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--border);
  font-weight: 500;
  white-space: nowrap;
}
.cta-btn:hover { border-color: var(--accent); text-decoration: none; }
.cta-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.cta-btn.primary:hover { opacity: 0.9; }

.muted { color: var(--ink-faint) !important; }

/* ---------------- Mobile ---------------- */
@media (max-width: 720px) {
  .hero-inner { padding: 40px 20px 32px; }
  .hero-title { font-size: 32px; }
  .cards { padding: 24px 20px; grid-template-columns: 1fr; gap: 16px; }
  .card { padding: 20px 18px 18px; }
  .card-head { flex-direction: column; }
  .card-summary-foot { flex-direction: column; align-items: stretch; gap: 8px; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .tab-btn { white-space: nowrap; }
  .kv-list li { flex-direction: column; gap: 4px; }
}