/* Riverside Points — Public Explorer.
 * NYTimes-inspired: white background, hairline rules, serif headlines.
 */

:root {
  --bg:           #ffffff;
  --bg-soft:      #f7f7f7;
  --bg-tint:      #fafaf7;
  --ink:          #121212;
  --ink-2:        #333333;
  --ink-mute:     #666666;
  --ink-fade:     #9a9a9a;
  --rule:         #dfdfdf;
  --rule-soft:    #ebebeb;
  --rule-strong:  #000000;
  --red:          #d0021b;
  --green:        #0a8754;
  --link-hover:   #4a4a4a;
  --serif:        Georgia, "Times New Roman", "Songti SC", "STSong", serif;
  --sans:         "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono:         "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; font-size: inherit; cursor: pointer; }
a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--red); }
pre, code, .mono { font-family: var(--mono); font-size: 13px; }

h1, h2, h3, .serif {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.kicker {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.4rem;
}
.byline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-mute);
}
.dek {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  color: var(--ink-2);
  margin: 0 0 2rem;
  max-width: 65ch;
}

/* ============================== MASTHEAD ============================== */

.masthead { border-bottom: 1px solid var(--rule-strong); background: var(--bg); }
.masthead__inner { max-width: 1280px; margin: 0 auto; padding: 1.5rem 2rem 0; }
.masthead__brand {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}
.brand-link { text-decoration: none; color: inherit; }
.brand-link:hover { color: inherit; }
.brand-link:hover .masthead__title { color: var(--red); }
.masthead__title {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0;
}
.masthead__est {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0.25rem 0 0;
}
.masthead__date {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.topnav {
  display: flex;
  gap: 0;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
}
.nav-item {
  color: var(--ink-2);
  padding: 0.5rem 1rem 0.5rem 0;
  margin-right: 1rem;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  background: transparent;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.nav-item:hover { color: var(--ink); }
.nav-item.active {
  color: var(--ink);
  border-bottom-color: var(--rule-strong);
}

.search {
  display: flex;
  gap: 0.5rem;
  padding: 0.85rem 0 1.25rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0;
}
.search input {
  flex: 1;
  font-family: var(--mono);
  font-size: 13px;
  border: none;
  border-bottom: 1px solid var(--rule-strong);
  padding: 0.5rem 0;
  background: transparent;
  color: var(--ink);
  outline: none;
}
.search input:focus { border-bottom-color: var(--red); }
.search button {
  background: var(--rule-strong);
  color: var(--bg);
  border: 1px solid var(--rule-strong);
  padding: 0.5rem 1.25rem;
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.search button:hover { background: var(--bg); color: var(--rule-strong); }

/* ============================== MAIN ============================== */

#main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}
.loading {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-mute);
  padding: 4rem 0;
  text-align: center;
}
.error {
  border-top: 3px double var(--red);
  padding: 2rem 0;
  font-family: var(--serif);
  color: var(--red);
  font-size: 18px;
}

/* ============================== STATS BAR ============================== */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  border-top: 3px double var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
  padding: 1.5rem 0;
  margin-bottom: 2.5rem;
}
.stat__label {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.4rem;
}
.stat__value {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat__sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-mute);
  margin-top: 0.35rem;
}

/* ============================== PAGE / SECTIONS ============================== */

.page__head {
  border-top: 3px double var(--rule-strong);
  padding-top: 1rem;
  margin-bottom: 0.5rem;
}
.page__title {
  font-size: 38px;
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.section {
  border-top: 1px solid var(--rule-strong);
  padding: 1.25rem 0 1.5rem;
  margin-top: 1.5rem;
}
.section h3 {
  font-size: 22px;
  margin: 0 0 1rem;
}

/* ============================== TABLES ============================== */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  border-top: 1px solid var(--rule-strong);
}
.table th, .table td {
  padding: 0.7rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  vertical-align: baseline;
}
.table th {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border-bottom: 1px solid var(--rule-strong);
  background: var(--bg);
  white-space: nowrap;
}
.table tr:last-child td { border-bottom: 1px solid var(--rule-strong); }
.table td.right, .table th.right { text-align: right; font-variant-numeric: tabular-nums; }
.table td.mono { font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); }
.table tr:hover td { background: var(--bg-soft); }
.table tr.clickable { cursor: pointer; }
.table tr.clickable td:first-child { font-weight: 600; }

.amt-pos { font-variant-numeric: tabular-nums; font-weight: 600; }
.amt-zero { color: var(--ink-fade); }

/* ============================== TX-TYPE PILLS ============================== */

.tx-type {
  display: inline-block;
  padding: 1px 7px;
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  background: var(--bg);
}
.tx-type.genesis    { background: var(--ink); color: var(--bg); }
.tx-type.transfer   { border-color: var(--ink); }
.tx-type.rotate_key { border-style: dashed; color: var(--ink-mute); }

.anchor-status {
  display: inline-block;
  padding: 1px 7px;
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  border: 1px solid var(--rule);
  color: var(--ink-2);
}
.anchor-status.anchored { color: var(--green); border-color: var(--green); }
.anchor-status.pending  { color: var(--ink-mute); border-color: var(--rule-strong); border-style: dashed; }
.anchor-status.none     { color: var(--ink-fade); border-color: var(--rule); }

/* ============================== KV / DETAIL ============================== */

.detail-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0.6rem 1.5rem;
  margin: 1rem 0;
}
.detail-grid dt {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 2px;
}
.detail-grid dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  color: var(--ink);
}
.detail-grid dd.serif {
  font-family: var(--serif);
  font-size: 16px;
}
.detail-grid dd.big {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.detail-grid dd a { font-family: inherit; }
.detail-grid dd.muted { color: var(--ink-fade); }

.copy-row { display: flex; align-items: center; gap: 0.5rem; }
.copy-btn {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  padding: 2px 8px;
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.copy-btn:hover { color: var(--ink); border-color: var(--rule-strong); }

/* ============================== PROOF CARDS ============================== */

.proof-card {
  background: var(--bg-soft);
  border-left: 3px solid var(--rule-strong);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.proof-card h4 {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
  color: var(--ink-2);
}
.proof-card pre {
  margin: 0.5rem 0 0;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 11.5px;
  color: var(--ink-2);
}
.proof-card .verify-status {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  margin-top: 0.75rem;
  color: var(--green);
}
.proof-card .verify-status.fail { color: var(--red); }

.action-btn {
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
  padding: 0.4rem 1rem;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0.75rem 0 0;
  border-radius: 0;
}
.action-btn:hover { background: var(--bg); color: var(--ink); }
.action-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============================== ARTICLE-STYLE DETAIL ============================== */

.article {
  max-width: 880px;
  margin: 0 auto;
}
.article__kicker {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 0.5rem;
}
.article__head {
  border-top: 3px double var(--rule-strong);
  padding-top: 1rem;
  margin-bottom: 1.5rem;
}
.article__title {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.08;
  margin: 0 0 0.5rem;
}
.article__byline {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-mute);
}
.article__byline strong { color: var(--ink); font-style: normal; font-weight: 600; }

.permalink {
  border-top: 1px solid var(--rule);
  padding-top: 1.5rem;
  margin-top: 3rem;
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 14px;
}
.permalink code { font-style: normal; }

/* ============================== PAGINATION ============================== */

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--rule-strong);
  padding-top: 1rem;
  margin-top: 1.5rem;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.pagination button {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  padding: 0.4rem 1rem;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pagination button:hover { color: var(--ink); border-color: var(--rule-strong); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ============================== COLOPHON ============================== */

.colophon {
  max-width: 1280px;
  margin: 4rem auto 2rem;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-mute);
}
.colophon code { font-style: normal; }

/* ============================== RESPONSIVE ============================== */

@media (max-width: 900px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .masthead__title { font-size: 28px; }
  .article__title { font-size: 32px; }
  .detail-grid { grid-template-columns: 1fr; gap: 0.5rem; }
  .detail-grid dt { padding-top: 0.5rem; }
  #main, .masthead__inner, .colophon { padding-left: 1.25rem; padding-right: 1.25rem; }
}