:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #dde3ea;
  --text: #172026;
  --muted: #60707f;
  --accent: #e86c2a;
  --accent-soft: #fff4ed;
  --blue-soft: #eef6ff;
  --success: #2d6a4f;
  --error: #b42318;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem 0.5rem;
  max-width: 1400px;
  margin: 0 auto;
  flex-direction: column;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.topbar h1 { font-size: 1.35rem; margin: 0; letter-spacing: 0; }
.subtitle { color: var(--muted); margin: 0.2rem 0 0; font-size: 0.92rem; }

.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: flex-start;
}

.nav-tabs a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
  font-size: 0.84rem;
  font-weight: 600;
}

.nav-tabs a.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.badge {
  font-size: 0.72rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
  margin-top: 0.2rem;
}

.banner {
  max-width: 1400px;
  margin: 0.5rem auto 0;
  padding: 0 1.5rem;
}

.banner.alert-error,
.banner.alert-warn {
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  font-size: 0.88rem;
}

.alert-error { background: #fef2f2; color: var(--error); border: 1px solid #fecaca; }
.alert-warn { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: var(--accent-soft); color: #9a3412; border: 1px solid #fed7aa; }

.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 80px);
  padding: 0 1.5rem 2rem;
}

body.rpc-inspector-page {
  height: 100vh;
  overflow: hidden;
}

body.rpc-inspector-page .rpc-window-layout {
  position: fixed;
  inset: 0;
  display: flex;
  max-width: none;
  min-height: 0;
  padding: 1rem;
}

body.rpc-inspector-page .rpc-window-panel {
  flex: 1;
  height: auto;
  min-height: 0;
  max-height: none;
}

body.rpc-inspector-page .log-list {
  min-height: 0;
  overflow: hidden;
}

body.rpc-inspector-page .log-split {
  height: 100%;
  min-height: 0;
}

body.rpc-inspector-page .log-column-scroll {
  min-height: 0;
  overflow-y: auto;
}

@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .panel { min-height: 360px; }
}

.main { padding: 1rem 0 0; }

.card {
  background: linear-gradient(180deg, #ffffff 0%, #fff7ed 100%);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.card h2 { font-size: 0.95rem; margin: 0 0 0.35rem; font-weight: 600; }

.hero { background: linear-gradient(180deg, #ffffff 0%, #fff3e6 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.info-columns {
  display: grid;
  gap: 1.25rem;
}
.info-columns-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.info-columns > div {
  min-width: 0;
  padding-left: 1.25rem;
  border-left: 1px solid rgba(23, 32, 38, 0.2);
}
.info-columns > div:first-child {
  padding-left: 0;
  border-left: none;
}
.info-columns h2:not(:first-child) {
  margin-top: 1.1rem;
}

.flow-message {
  margin: 0 0 1.15rem;
  color: #7c2d12;
  background: #fff4ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  padding: 0.8rem 0.9rem;
  font-size: 0.92rem;
  line-height: 1.55;
}

@media (max-width: 640px) {
  .hero-grid { grid-template-columns: 1fr; }
  .info-columns-3 { grid-template-columns: 1fr; }
  .info-columns > div {
    padding-left: 0;
    padding-top: 1rem;
    border-left: none;
    border-top: 1px solid rgba(23, 32, 38, 0.2);
  }
  .info-columns > div:first-child {
    padding-top: 0;
    border-top: none;
  }
}

.section-head { display: flex; gap: 0.85rem; margin-bottom: 1rem; }

.step {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
}

.hint { color: var(--muted); font-size: 0.88rem; margin: 0; line-height: 1.5; }
.hint code { font-family: var(--mono); font-size: 0.82rem; }

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.3rem 0;
  font-size: 0.92rem;
}

.stat-row.muted { color: var(--muted); font-size: 0.85rem; }

.mono { font-family: var(--mono); font-size: 0.8rem; word-break: break-all; }
.mono.small { font-size: 0.72rem; }
.copy-address {
  cursor: pointer;
  border-radius: 6px;
  padding: 0.1rem 0.2rem;
  margin-left: -0.2rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.copy-address:hover,
.copy-address:focus {
  background: #ffedd5;
  color: #9a3412;
  outline: none;
}
.copy-address.copied {
  background: #dcfce7;
  color: #166534;
}
.copy-popover {
  position: fixed;
  z-index: 50;
  background: #172026;
  color: #fff;
  border-radius: 6px;
  padding: 0.32rem 0.5rem;
  font-size: 0.76rem;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
  pointer-events: none;
  transform: translate(-50%, -115%);
  opacity: 0;
  transition: opacity 0.12s ease;
}
.copy-popover.show {
  opacity: 1;
}

label { display: block; font-size: 0.82rem; color: var(--muted); margin-bottom: 0.35rem; }

input,
textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: var(--bg);
  margin-bottom: 0.85rem;
}

textarea {
  min-height: 5.75rem;
  resize: vertical;
}

input:focus,
textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }

button {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  font-weight: 500;
}

button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.secondary { background: var(--surface); border-color: var(--accent); color: var(--accent); }
button.ghost { background: transparent; border: none; color: var(--muted); font-size: 0.75rem; padding: 0.2rem 0.4rem; }
button.icon-button {
  width: 1.8rem;
  height: 1.8rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}
button.icon-button:hover {
  color: var(--accent);
  border-color: var(--accent);
}
button:disabled { opacity: 0.5; cursor: not-allowed; }

.demo-panel {
  margin-bottom: 1rem;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.simple-facts {
  margin-top: 1rem;
}

.fact-grid div {
  padding: 0.75rem;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.fact-grid div:last-child {
  border-right: none;
}

.fact-grid span,
.fact-grid strong {
  display: block;
}

.fact-grid span {
  color: var(--muted);
  font-size: 0.72rem;
  margin-bottom: 0.2rem;
}

.fact-grid strong {
  font-size: 0.86rem;
}

.compare {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
}

.compare-row {
  display: grid;
  grid-template-columns: 1fr 2fr 0.8fr;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.86rem;
}

.compare-row:last-child {
  border-bottom: none;
}

.compare-head {
  color: var(--muted);
  background: var(--bg);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.field-label { font-size: 0.82rem; color: var(--muted); margin: 0.25rem 0 0.5rem; }
.field-note { font-size: 0.78rem; color: var(--muted); margin: -0.5rem 0 0.85rem; line-height: 1.45; }

.sign-method { display: flex; flex-direction: column; gap: 0.45rem; margin-bottom: 0.85rem; }
.radio-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.88rem;
  color: var(--text);
  margin: 0;
  cursor: pointer;
}
.radio-label input { width: auto; margin: 0; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.25rem; margin-bottom: 0.25rem; }
.hidden { display: none !important; }

.permit-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  background: var(--accent-soft);
  border: 1px solid #fed7aa;
  color: #7c2d12;
  font-size: 0.88rem;
  line-height: 1.55;
}
.permit-status p { margin: 0; }
.permit-status .mono { font-family: var(--mono); font-size: 0.78rem; word-break: break-all; }

.result { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); font-size: 0.88rem; }
.result .ok { color: var(--success); font-weight: 600; margin-bottom: 0.5rem; }
.result .mono { margin: 0.2rem 0; }
.result-line { margin: 0.35rem 0 0; }

.code-result {
  margin-top: 1rem;
  padding: 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 360px;
  overflow: auto;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  max-height: 720px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.log-list {
  flex: 1;
  padding: 0.65rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.45;
  min-height: 0;
}

.log-empty { color: var(--muted); padding: 0.5rem; }

.log-entry {
  padding: 0.6rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
}

.log-entry .meta { display: flex; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.35rem; }
.log-entry .label { color: var(--accent); font-weight: 700; }
.log-entry .time { color: var(--muted); }
.log-entry .url { color: var(--muted); word-break: break-all; margin-bottom: 0.25rem; }
.log-entry .summary { font-weight: 600; margin-bottom: 0.35rem; }

.log-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.75rem;
  height: 100%;
  min-height: 340px;
}

.log-column {
  min-width: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.log-column-title {
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.log-column-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0.6rem;
}

.log-payload {
  margin-top: 0.25rem;
  padding: 0.45rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  white-space: pre-wrap;
  word-break: break-all;
  overflow: visible;
}

.log-payload-label {
  color: var(--muted);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.35rem;
}

@media (max-width: 760px) {
  .fact-grid,
  .compare-row,
  .log-split {
    grid-template-columns: 1fr;
  }

  .fact-grid div {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .fact-grid div:last-child {
    border-bottom: none;
  }
}