:root {
  --exchange-accent: #1e7f98;
  --exchange-accent-soft: rgba(30, 127, 152, 0.12);
  --exchange-good: #1f7a66;
  --exchange-bad: #9b3c44;
}

.exchange-rate-page {
  margin: 0;
}

.exchange-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 2.5rem 1rem 3rem;
  display: grid;
  gap: 14px;
}

.exchange-hero {
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: 0;
  text-align: center;
}

.exchange-hero h1 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 5vw, 3.1rem);
}

.exchange-hero .subtitle {
  margin: 0;
  max-width: 58ch;
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
  line-height: 1.5;
}

.exchange-panel {
  width: 100%;
  padding: 18px;
}

.pair {
  margin: 0 0 14px;
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(30, 127, 152, 0.38);
  background: var(--exchange-accent-soft);
  color: #0f4250;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

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

@media (min-width: 700px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 11px 34px 11px 12px;
  font: inherit;
  color: var(--text);
  background-color: rgba(255, 255, 255, 0.9);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--exchange-accent) 50%),
    linear-gradient(135deg, var(--exchange-accent) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% - 2px),
    calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

select:focus {
  outline: 2px solid rgba(30, 127, 152, 0.45);
  outline-offset: 1px;
}

.result {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.78);
}

.value {
  margin: 0;
  color: #0f2436;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 800;
  line-height: 1.3;
}

.meta,
.error {
  margin: 6px 0 0;
  font-size: 0.9rem;
}

.meta {
  color: var(--exchange-good);
}

.error {
  color: var(--exchange-bad);
}

.tool-banner-ad {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.8rem;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.tool-banner-ad .ad-label {
  margin: 0 0 0.45rem;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  font-weight: 700;
}

.tool-banner-ad .ad-box {
  min-height: 110px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.88);
  padding: 0.5rem;
}

@media (max-width: 700px) {
  .exchange-panel {
    padding: 14px;
  }

  .exchange-shell {
    padding-top: 1.5rem;
  }
}