:root {
  --bg: #0d0f14;
  --bg-2: #141821;
  --card: #171c27;
  --card-2: #1c2230;
  --line: #262d3b;
  --text: #eaeef6;
  --muted: #97a1b4;
  --brand: #6ee7b7;
  --brand-2: #38bdf8;
  --accent: #a78bfa;
  --warn: #fbbf24;
  --danger: #fb7185;
  --radius: 16px;
  --wrap: 1080px;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #1a2233 0%, var(--bg) 55%);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--brand); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13,15,20,0.72); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { font-weight: 800; font-size: 20px; letter-spacing: -0.03em; display: flex; align-items: center; gap: 8px; }
.brand-mark { color: var(--brand); font-size: 18px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #06251f; font-weight: 700; border: 0; cursor: pointer;
  padding: 13px 22px; border-radius: 12px; font-size: 15px;
  transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 6px 20px -8px rgba(56,189,248,0.5);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 26px -8px rgba(56,189,248,0.6); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

/* HERO */
.hero { padding: 84px 0 64px; }
.pill {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--brand); background: rgba(110,231,183,0.1);
  border: 1px solid rgba(110,231,183,0.25); padding: 5px 12px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(38px, 6vw, 66px); font-weight: 850; margin: 0 0 20px; }
.grad { background: linear-gradient(120deg, var(--brand), var(--brand-2) 55%, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-loop {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  padding: 18px 20px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); font-size: 14px; font-weight: 600; color: var(--text);
}
.hero-loop i { color: var(--muted); font-style: normal; }
.hero-loop span { white-space: nowrap; }

/* BANDS */
.band { padding: 72px 0; border-top: 1px solid var(--line); }
.band.alt { background: linear-gradient(180deg, var(--bg-2), transparent); }
.band h2 { font-size: clamp(26px, 3.5vw, 38px); margin: 0 0 8px; }
.band .sub { color: var(--muted); font-size: 17px; margin: 0 0 40px; }

/* CARDS */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card .num {
  width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px;
  background: rgba(110,231,183,0.12); color: var(--brand); font-weight: 800; margin-bottom: 16px;
}
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { color: var(--muted); margin: 0; font-size: 15px; }

/* TRUST */
.trust-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.trust { display: flex; flex-direction: column; gap: 8px; padding: 24px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.ticon { font-size: 26px; }
.trust h4 { margin: 4px 0 0; font-size: 17px; }
.trust p { margin: 0; color: var(--muted); font-size: 15px; }

/* DEMO */
.role-toggle { display: inline-flex; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 6px; margin-bottom: 24px; }
.role { background: transparent; border: 0; color: var(--muted); font-weight: 600; font-size: 15px; padding: 10px 18px; border-radius: 8px; cursor: pointer; }
.role.active { background: var(--card-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }

.panel { margin-bottom: 28px; }
.panel.hidden { display: none; }

.post-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.post-form h3 { margin: 0 0 18px; }
.post-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 14px; }
.post-form input, .post-form select {
  background: var(--bg-2); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 11px 13px; font-size: 15px; font-weight: 400;
}
.post-form input:focus, .post-form select:focus { outline: none; border-color: var(--brand); }
.grid2 { display: grid; grid-template-columns: 2fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.finder-hint { background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); padding: 20px 22px; color: var(--muted); }
.finder-hint strong { color: var(--text); }

.feed-head { display: flex; align-items: center; justify-content: space-between; margin: 8px 0 18px; }
.feed-head h3 { margin: 0; }

/* FEED */
.feed { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.find { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.find-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.find h4 { margin: 0; font-size: 18px; }
.find .detail { color: var(--muted); font-size: 14px; margin: 0; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 13px; color: var(--muted); }
.meta b { color: var(--text); font-weight: 700; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 3px 9px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--line); color: var(--muted); }

.chip { font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.chip.open { background: rgba(110,231,183,0.14); color: var(--brand); }
.chip.claimed { background: rgba(56,189,248,0.14); color: var(--brand-2); }
.chip.found { background: rgba(167,139,250,0.16); color: var(--accent); }
.chip.completed { background: rgba(148,163,184,0.16); color: var(--muted); }

.escrow { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 10px 12px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); }
.escrow.held { border-color: rgba(251,191,36,0.4); color: var(--warn); }
.escrow.released { border-color: rgba(110,231,183,0.4); color: var(--brand); }

.proof { font-size: 13px; color: var(--muted); background: var(--bg-2); border-left: 3px solid var(--accent); padding: 10px 12px; border-radius: 8px; }
.proof-img { display: block; }
.proof-img img { width: 100%; max-height: 220px; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); }
.actions { display: flex; gap: 10px; margin-top: 2px; }
.actions .btn { flex: 1; }

.foot { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); }
.foot p { margin: 4px 0; }
.muted { color: var(--muted); font-size: 14px; }

/* AUTH — nav slot + user chip */
.auth-slot { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.user-chip { font-size: 14px; font-weight: 600; color: var(--text); background: var(--card); border: 1px solid var(--line); padding: 7px 12px; border-radius: 999px; }

/* AUTH — demo bar */
.demo-auth { margin-bottom: 24px; }
.signed-out, .signed-in {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 20px; font-size: 15px; color: var(--muted);
}
.signed-in b, .signed-out b { color: var(--text); }
.role-pick { display: flex; align-items: center; gap: 6px; margin-left: auto; font-size: 13px; }
.rolepill { background: var(--bg-2); border: 1px solid var(--line); color: var(--muted); font-weight: 600; font-size: 13px; padding: 6px 12px; border-radius: 999px; cursor: pointer; }
.rolepill.on { background: rgba(110,231,183,0.14); color: var(--brand); border-color: rgba(110,231,183,0.4); }

/* MODAL */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: rgba(3,6,12,0.66); backdrop-filter: blur(4px); }
.modal.hidden { display: none; }
.modal-card { position: relative; width: min(420px, 92vw); background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 28px; }
.modal-x { position: absolute; top: 14px; right: 16px; background: none; border: 0; color: var(--muted); font-size: 18px; cursor: pointer; }
.modal-tabs { display: flex; gap: 6px; background: var(--bg-2); border-radius: 10px; padding: 5px; margin-bottom: 20px; }
.mtab { flex: 1; background: transparent; border: 0; color: var(--muted); font-weight: 600; font-size: 15px; padding: 9px; border-radius: 7px; cursor: pointer; }
.mtab.active { background: var(--card-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }
.auth-form input { background: var(--bg-2); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 11px 13px; font-size: 15px; }
.auth-form input:focus { outline: none; border-color: var(--brand); }
.auth-error { color: var(--danger); font-size: 13px; margin: 2px 0 0; min-height: 16px; }
.demo-hint { margin: 18px 0 0; font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.demo-hint code { background: var(--bg-2); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; font-size: 12px; }

@media (max-width: 780px) {
  .nav-links { display: none; }
  .cards, .trust-grid, .feed, .grid2, .grid3 { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 40px; }
  .role-pick { margin-left: 0; }
}