:root {
  --bg: #0e1114;
  --panel: #15191d;
  --panel-2: #1b2026;
  --line: #242a31;
  --text: #e9eef3;
  --muted: #8b98a5;
  --brand: #fbf332;
  --brand-ink: #0e1114;
  --danger: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 22px;
  background: rgba(14, 17, 20, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-name { font-weight: 800; letter-spacing: -.01em; }

.lang {
  appearance: none;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 30px 8px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 52%, calc(100% - 11px) 52%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.lang:hover { border-color: #33404b; }
.lang:focus-visible,
input:focus-visible,
button:focus-visible,
.ghost:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

/* ---------- layout ---------- */

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 34px 22px 40px;
}

.hero { margin-bottom: 22px; }
.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.hero p { margin: 0; color: var(--muted); max-width: 60ch; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

/* ---------- add form ---------- */

.add-form { display: flex; gap: 10px; }

.add-form input {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit;
}
.add-form input::placeholder { color: #6d7a86; }

button {
  font: inherit;
  font-weight: 800;
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  cursor: pointer;
}
.add-form button { background: var(--brand); color: var(--brand-ink); }
.add-form button:hover { filter: brightness(.93); }

.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  font-weight: 700;
  align-self: flex-start;
}
.ghost:hover { border-color: var(--brand); color: var(--brand); }
.ghost[disabled] { opacity: .5; cursor: default; }

.form-msg {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--muted);
}
.form-msg.err { color: var(--danger); }
.form-msg.ok { color: var(--brand); }

/* ---------- summary ---------- */

.summary {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 22px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; gap: 3px; }
.stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.stat-value { font-size: 19px; font-variant-numeric: tabular-nums; }
.summary .ghost { margin-left: auto; }

.updated { margin: 10px 0 0; font-size: 12.5px; color: var(--muted); }

/* ---------- wallet list ---------- */

.wallet-list { list-style: none; margin: 12px 0 0; padding: 0; }

.wallet {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.wallet + .wallet { margin-top: 9px; }

.wallet-main { min-width: 0; flex: 1; }
.wallet-addr {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  font-weight: 700;
}
.wallet-meta { display: block; font-size: 12.5px; color: var(--muted); }

.wallet-values { text-align: right; font-variant-numeric: tabular-nums; }
.wallet-sol { display: block; font-weight: 800; }
.wallet-usd { display: block; font-size: 12.5px; color: var(--muted); }

.wallet-remove {
  flex: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 9px;
  width: 34px;
  height: 34px;
  padding: 0;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}
.wallet-remove:hover { border-color: var(--danger); color: var(--danger); }

.empty { margin: 16px 0 0; color: var(--muted); }
.empty[hidden] { display: none; }

/* ---------- steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 26px;
}
.step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--brand);
  color: var(--brand-ink);
  font-size: 13px;
  font-weight: 800;
}
.step h3 { margin: 10px 0 6px; font-size: 15.5px; }
.step p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* ---------- footer ---------- */

footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 18px 22px 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
footer .brand-name { font-size: 13px; color: var(--text); }

@media (max-width: 560px) {
  .add-form { flex-direction: column; }
  .summary .ghost { margin-left: 0; }
  .wallet { align-items: flex-start; }
}