/* ...existing styles... */
:root { 
  --bg: #ffffff; 
  --fg: #0a0a0a; 
  --muted: #6b7280; 
  --card: #fafafa; 
  --ring: #e5e7eb; 
}
* { 
  box-sizing: border-box; 
}
html, body { 
  margin: 0; 
  padding: 0; 
  background: var(--bg); 
  color: var(--fg); 
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; 
}

.side-menu {
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  width: 200px;
  background: var(--card);
  border-right: 1px solid var(--ring);
  padding: 24px 0;
  z-index: 100;
}

.menu-logo {
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 14px;
  color: var(--fg);
  padding: 0 24px;
  margin-bottom: 32px;
}

.menu-items {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu-link {
  display: block;
  padding: 12px 24px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all .15s ease;
  border-left: 3px solid transparent;
}

.menu-link:hover {
  color: var(--fg);
  background: rgba(0,0,0,0.02);
}

.menu-link.active {
  color: var(--fg);
  border-left-color: var(--fg);
  background: rgba(0,0,0,0.04);
}

.container { 
  max-width: 880px; 
  margin: 0 auto 0 200px; 
  padding: 32px 20px; 
}

.header h1 { 
  margin: 0 0 4px; 
  font-size: 28px; 
  letter-spacing: -0.01em; 
}

.sub { 
  margin: 0; 
  color: var(--muted); 
}

.cards { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); 
  gap: 16px; 
  margin: 24px 0; 
}

.card { 
  background: var(--card); 
  border: 1px solid var(--ring); 
  border-radius: 12px; 
  padding: 16px; 
}

.card-title { 
  margin: 0 0 12px; 
  font-size: 16px; 
  display: flex; 
  align-items: center; 
  gap: 8px; 
}

.card-title select { 
  margin-left: auto; 
  font-size: 14px; 
  padding: 4px 8px; 
  border-radius: 6px; 
  border: 1px solid var(--ring); 
  background: #fff; 
  color: var(--fg); 
}

.price-row { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 12px; 
}

.price .label { 
  display: block; 
  color: var(--muted); 
  font-size: 12px; 
}

.value { 
  font-weight: 700; 
  font-size: 22px; 
}

.meta { 
  margin-top: 10px; 
  color: var(--muted); 
  font-size: 12px; 
}

.fx-row { 
  display: grid; 
  gap: 6px; 
}

.fx-line { 
  display: flex; 
  justify-content: space-between; 
  font-size: 14px; 
}

.converter .fields { 
  display: grid; 
  grid-template-columns: 1fr auto 1fr; 
  gap: 12px; 
  align-items: end; 
}

.field .label { 
  display: block; 
  font-size: 12px; 
  color: var(--muted); 
  margin-bottom: 6px; 
}

input { 
  width: 100%; 
  font-size: 18px; 
  padding: 12px 12px; 
  border: 1px solid var(--ring); 
  border-radius: 10px; 
  background: #fff; 
  color: var(--fg); 
  outline: none; 
  transition: border-color .15s ease, box-shadow .15s ease; 
}

input:focus { 
  border-color: #111; 
  box-shadow: 0 0 0 3px rgba(0,0,0,0.06); 
}

.swap { 
  align-self: center; 
  height: 42px; 
  width: 42px; 
  border-radius: 10px; 
  border: 1px solid var(--ring); 
  background: #fff; 
  cursor: pointer; 
  transition: transform .12s ease, background .12s ease; 
}

.swap:hover { 
  background: #f3f4f6; 
}

.swap:active { 
  transform: scale(0.98); 
}

.hint { 
  margin: 10px 0 0; 
  color: var(--muted); 
  font-size: 13px; 
  min-height: 18px; 
}

.footer { 
  margin-top: 16px; 
  display: flex; 
  gap: 12px; 
  align-items: center; 
}

.refresh { 
  border: 1px solid var(--ring); 
  background: #fff; 
  border-radius: 10px; 
  padding: 8px 12px; 
  cursor: pointer; 
  transition: background .12s ease; 
}

.refresh:hover { 
  background: #f3f4f6; 
}

.status { 
  color: var(--muted); 
  font-size: 13px; 
}

.projection[hidden] { 
  display: none; 
}

.proj-grid { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 12px; 
  margin-bottom: 12px; 
}

.projection { 
  margin-top: 16px; 
}

@media (max-width: 640px){ 
  .proj-grid { 
    grid-template-columns: 1fr; 
  } 
}

@media (max-width: 720px){ 
  .wallet-grid { 
    grid-template-columns: 1fr; 
  } 
}

.site-title { 
  font-weight: 700; 
  letter-spacing: .08em; 
  text-transform: uppercase; 
  font-size: 12px; 
  color: var(--muted); 
  margin-bottom: 6px; 
}

@media (max-width: 768px) {
  .side-menu {
    width: 60px;
  }

  .menu-logo {
    font-size: 10px;
    padding: 0 12px;
  }

  .menu-link {
    padding: 12px;
    font-size: 10px;
    text-align: center;
  }

  .container {
    margin-left: 60px;
  }
}