@font-face {
  font-family: 'Geist';
  src: url('https://musechain.io/fonts/geist/geist-latin-wght-normal.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #090a0f;
  --surface: #12141c;
  --surface-border: #1e2230;
  --surface-hover: #191c28;
  --text-main: #f0f2f5;
  --text-dim: #8b92a5;
  --lime: #ccff00;
  --lime-glow: rgba(204, 255, 0, 0.15);
  --danger: #ff4d4d;
  --cyan: #00d9ff;
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--lime);
  text-decoration: none;
  transition: opacity 0.15s ease;
}
a:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
}
.text-lime {
  color: var(--lime);
}

.header {
  border-bottom: 1px solid var(--surface-border);
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(18, 20, 28, 0.7);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--surface-border);
  color: var(--lime);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.author-tag {
  font-size: 13px;
  color: var(--text-dim);
}
.author-tag .dot {
  margin: 0 6px;
}
.author-tag .muse-link {
  font-weight: 600;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.hero-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  background: linear-gradient(135deg, #151824 0%, #0d0f17 100%);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.hero-image-wrap {
  width: 100%;
  height: 100%;
  min-height: 180px;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-content {
  padding: 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-content h2 {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}

.hero-content p {
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.55;
}

.chain-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(204, 255, 0, 0.08);
  border: 1px solid rgba(204, 255, 0, 0.25);
  color: var(--lime);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--surface-border);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--lime);
  color: #000;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 8px;
}

.step-title {
  font-size: 1rem;
  font-weight: 600;
}

.status-indicator {
  font-size: 12px;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-indicator::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 8px var(--lime);
}

.badge-tag, .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--surface-border);
  color: var(--text-dim);
  padding: 3px 8px;
  border-radius: 6px;
}

.form-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.flex-1 { flex: 1; }
.flex-2 { flex: 2; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
}

select, input {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text-main);
  padding: 10px 12px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s ease;
}
select:focus, input:focus {
  border-color: var(--lime);
  box-shadow: 0 0 0 2px var(--lime-glow);
}

.spec-table-wrap {
  overflow-x: auto;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.spec-table th, .spec-table td {
  padding: 8px 12px;
  text-align: left;
  border: 1px solid var(--surface-border);
}
.spec-table th {
  background: var(--bg);
  color: var(--text-dim);
  font-weight: 600;
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.inputs-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.diff-container {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.diff-card {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.diff-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}
.diff-target {
  font-weight: 600;
  color: var(--text-main);
}
.diff-read-sig {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: 11px;
}

.diff-body {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.diff-val {
  padding: 6px 8px;
  border-radius: 4px;
  background: #141721;
}
.diff-val.before {
  color: #ff9999;
  border-left: 2px solid #ff5555;
}
.diff-val.after {
  color: var(--lime);
  border-left: 2px solid var(--lime);
}
.diff-val.unverified {
  color: #8892a0;
  border-left: 2px dashed #4b5563;
  font-style: italic;
}
.diff-arrow {
  color: var(--text-dim);
  text-align: center;
}

.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(90deg, #171c26 0%, #11131c 100%);
  border: 1px solid var(--surface-border);
}

.btn {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
}
.btn-primary {
  background: var(--lime);
  color: #000;
}
.btn-primary:hover {
  background: #b8e600;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(204, 255, 0, 0.3);
}
.btn-secondary {
  background: var(--surface-border);
  color: var(--text-main);
  border: 1px solid #2d3448;
}
.btn-secondary:hover {
  background: #272c3d;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.result-block h4 {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-box {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  padding: 12px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  min-height: 80px;
  white-space: pre-wrap;
  color: #c9d1d9;
}

.tx-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  padding-top: 1rem;
  border-top: 1px solid var(--surface-border);
}
.tx-footer .label {
  color: var(--text-dim);
}

.footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  padding: 2rem 0;
}

/* Modal styles */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 5, 8, 0.85);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}
.modal-backdrop.hidden {
  display: none;
}

.modal {
  width: 90%;
  max-width: 560px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.modal-header h3 {
  font-size: 1.15rem;
}
.close-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 24px;
  cursor: pointer;
}
.close-btn:hover { color: #fff; }

.warning-callout {
  background: rgba(204, 255, 0, 0.06);
  border-left: 3px solid var(--lime);
  padding: 10px 14px;
  font-size: 12px;
  color: #d8deec;
  border-radius: 4px;
  margin-bottom: 1.25rem;
}

.confirm-summary {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  font-size: 13px;
}
.confirm-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--surface-border);
}
.confirm-row-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.v-box {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  max-height: 140px;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

@media (max-width: 768px) {
  .hero-card {
    grid-template-columns: 1fr;
  }
  .split-layout, .result-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    flex-direction: column;
  }
  .action-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}