:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #7dd3fc;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.12), transparent 30%),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: var(--text);
  min-height: 100vh;
}

.container {
  width: min(960px, calc(100% - 32px));
  margin: 40px auto;
}

.hero {
  background: rgba(17, 24, 39, 0.75);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.1;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 760px;
}

.form-card {
  background: rgba(17, 24, 39, 0.82);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.grid-3 {
  grid-template-columns: 1.35fr 1fr 1fr;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.field label {
  font-size: 14px;
  color: var(--muted);
}

.field input,
.field select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #243145;
  color: var(--text);
  font-size: 16px;
  outline: none;
}

.field input:focus,
.field select:focus {
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

.input-wrap {
  position: relative;
}

.input-wrap-currency input {
  padding-right: 58px;
}

.currency-suffix {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  pointer-events: none;
}

.actions {
  margin-top: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

button {
  border: none;
  cursor: pointer;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  transition: 0.2s ease;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: white;
}

.primary-btn:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.primary-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.message {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.2);
  color: #fecaca;
  display: none;
}

.message.show {
  display: block;
}

.summary-bar {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.18);
  color: var(--text);
  font-size: 14px;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.summary-bar.show {
  display: flex;
}

.summary-dot {
  color: var(--accent);
  font-weight: 700;
}

.results {
  margin-top: 24px;
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.results.show {
  display: grid;
}

.card {
  background: rgba(17, 24, 39, 0.82);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.card-kicker {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--muted);
  font-weight: 600;
}

.value {
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  margin: 0 0 8px;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 14px;
}

.result-note {
  display: none;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.result-note.show {
  display: block;
}

.method-box {
  margin-top: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
}

.method-box h2 {
  margin: 0 0 16px;
  font-size: 22px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.method-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.method-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.method-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.data-meta {
  margin-bottom: 18px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 18px;
  padding: 16px;
}

.meta-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.meta-text {
  color: var(--text);
  font-size: 14px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.meta-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
}

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

.meta-item strong {
  font-size: 14px;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .field-amount {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .results,
  .method-grid,
  .meta-grid,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .container {
    width: min(100% - 16px, 960px);
    margin: 16px auto 28px;
  }

  .hero,
  .form-card,
  .card,
  .method-box {
    border-radius: 20px;
  }

  .hero,
  .form-card {
    padding: 18px;
  }

  .card,
  .method-item {
    padding: 16px;
  }

  .actions {
    margin-top: 16px;
  }

  .primary-btn {
    width: 100%;
  }

  .summary-dot {
    display: none;
  }

  .summary-bar {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}