@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,700&family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600&display=swap");

:root {
  --ink: #14201b;
  --muted: #5a6b63;
  --paper: #f3f6f2;
  --panel: rgba(255, 255, 255, 0.78);
  --line: rgba(20, 32, 27, 0.12);
  --accent: #1f7a5c;
  --accent-2: #0e4d3a;
  --warn: #9a5b12;
  --danger: #a12d2d;
  --shadow: 0 18px 50px rgba(20, 32, 27, 0.12);
  --radius: 18px;
  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--paper);
}

body {
  position: relative;
  overflow-x: hidden;
}

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 12% -10%, rgba(31, 122, 92, 0.28), transparent 60%),
    radial-gradient(700px 480px at 90% 0%, rgba(154, 91, 18, 0.18), transparent 55%),
    linear-gradient(160deg, #eef4ef 0%, #f7f3ea 48%, #e8efe9 100%);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(243, 246, 242, 0.65);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-chip {
  font-size: 0.9rem;
  color: var(--muted);
}

.app {
  width: min(920px, calc(100% - 2rem));
  margin: 2rem auto 4rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  animation: rise 420ms ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

h1, h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
h2 { font-size: 1.35rem; }

.lead {
  color: var(--muted);
  margin: 0 0 1.5rem;
  line-height: 1.55;
  max-width: 42rem;
}

.stack { display: grid; gap: 1rem; }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  font-weight: 500;
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  font: inherit;
  background: rgba(255,255,255,0.9);
  color: var(--ink);
}

textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: transform 160ms ease, background 160ms ease, opacity 160ms ease;
}

.btn:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn.ghost:hover { background: rgba(20,32,27,0.04); }
.btn.danger { background: var(--danger); }
.btn.secondary { background: #2c3d35; }

.tabs {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 999px;
  background: rgba(20,32,27,0.06);
  margin-bottom: 1rem;
}

.tab {
  border: none;
  background: transparent;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
}

.tab.active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 2px 10px rgba(20,32,27,0.08);
}

.wallet-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.wallet-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  text-decoration: none;
  color: inherit;
  transition: border-color 160ms ease, transform 160ms ease;
}

.wallet-item:hover {
  border-color: rgba(31,122,92,0.45);
  transform: translateY(-1px);
}

.wallet-item h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  word-break: break-all;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  background: rgba(31,122,92,0.12);
  color: var(--accent-2);
}

.badge.warn {
  background: rgba(154,91,18,0.14);
  color: var(--warn);
}

.banner {
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: rgba(154,91,18,0.1);
  border: 1px solid rgba(154,91,18,0.22);
  color: var(--warn);
  font-size: 0.92rem;
  line-height: 1.45;
}

.banner.ok {
  background: rgba(31,122,92,0.1);
  border-color: rgba(31,122,92,0.22);
  color: var(--accent-2);
}

.kv {
  display: grid;
  gap: 0.85rem;
  margin: 1rem 0;
}

.kv-item {
  display: grid;
  gap: 0.25rem;
}

.kv-item span {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-box {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 12px;
  background: #14201b;
  color: #e8efe9;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
}

.divider {
  height: 1px;
  background: var(--line);
  margin: 1.5rem 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  z-index: 50;
  max-width: min(90vw, 420px);
  text-align: center;
  animation: rise 240ms ease both;
}

.empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .app { margin-top: 1.25rem; }
  .panel { padding: 1.2rem; }
  .wallet-item { grid-template-columns: 1fr; }
}