:root {
  --bg: #0a1622;
  --bg-2: #102033;
  --panel: rgba(18, 36, 54, 0.82);
  --panel-solid: #13283b;
  --line: rgba(168, 198, 214, 0.14);
  --ink: #e8f1f6;
  --muted: #8aa0b0;
  --accent: #3ecfb5;
  --accent-dim: rgba(62, 207, 181, 0.16);
  --up: #3ecf8e;
  --down: #e06a5c;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --font: "Outfit", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --rail: 360px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

html, body {
  margin: 0;
  height: 100%;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(62, 207, 181, 0.12), transparent 55%),
    radial-gradient(700px 420px at 0% 100%, rgba(56, 120, 180, 0.18), transparent 50%),
    var(--bg);
  color: var(--ink);
  font-family: var(--font);
}

/* Board locks viewport; content pages must scroll */
html.is-board,
body.is-board {
  overflow: hidden;
  height: 100%;
}

html.is-page,
body.is-page {
  overflow-x: hidden;
  overflow-y: auto;
  height: auto;
  min-height: 100%;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

#app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

body.is-page #app,
.page-app {
  height: auto;
  min-height: 100vh;
  overflow: visible;
}

.mast {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(10, 22, 34, 0.92);
  position: sticky;
  top: 0;
  z-index: 40;
}

.mast-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.mast-mark {
  width: 1.1rem;
  height: 1.1rem;
  background: linear-gradient(135deg, var(--accent), #2a7fd4);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  flex-shrink: 0;
}

.mast-brand strong {
  display: block;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.mast-brand span {
  color: var(--muted);
  font-size: 0.78rem;
}

.mast-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin-left: 1rem;
  align-items: center;
}

.mast-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.mast-nav a:hover,
.mast-nav a.is-active {
  color: var(--ink);
}

.mast-meta {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.rail-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-solid);
  place-items: center;
  gap: 5px;
  flex-direction: column;
}

.rail-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--ink);
}

.shell {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  align-items: stretch;
  height: calc(100vh - 4.1rem);
  min-height: 0;
  overflow: hidden;
}

.rail {
  position: relative;
  height: 100%;
  max-height: none;
  overflow: auto;
  border-right: 1px solid var(--line);
  padding: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  background: linear-gradient(180deg, rgba(16, 32, 51, 0.95), rgba(10, 22, 34, 0.92));
  z-index: 1;
}

.rail::-webkit-scrollbar { width: 0; }

.coin {
  --tone: #3ecfb5;
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 0.55rem 0.7rem;
  display: grid;
  grid-template-columns: 22px 36px 1fr;
  gap: 0.55rem;
  align-items: center;
  text-align: left;
  position: relative;
  overflow: hidden;
  flex: 1 1 0;
  min-height: 0;
  width: 100%;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.coin::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--tone);
  opacity: 0.55;
}

.coin:hover,
.coin:focus-visible {
  border-color: rgba(62, 207, 181, 0.45);
}

.coin.is-active {
  background: linear-gradient(90deg, var(--accent-dim), rgba(18, 36, 54, 0.95));
  border-color: rgba(62, 207, 181, 0.55);
}

.coin-rank {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}

.coin img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #0a1622;
  object-fit: contain;
}

.coin-copy strong {
  display: block;
  font-size: 0.92rem;
  letter-spacing: -0.02em;
}

.coin-copy small {
  display: block;
  margin-top: 0.1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.coin-ghost {
  position: absolute;
  right: -0.2rem;
  bottom: -0.45rem;
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  opacity: 0.06;
  pointer-events: none;
  user-select: none;
}

.stage {
  position: relative;
  height: 100%;
  overflow: auto;
  padding: 1rem 1.25rem 1.25rem;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.stage-empty {
  flex: 1;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.stage-empty.is-hidden,
.stage-body.is-hidden,
.chart-spin.is-hidden,
.chart-error.is-hidden,
[hidden] {
  display: none !important;
}

.stage-body {
  position: relative;
  z-index: 2;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  flex: 0 0 auto;
}

.metric {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  box-shadow: var(--shadow);
}

.metric.wide { grid-column: span 2; }

.metric b {
  display: block;
  position: relative;
  font-size: clamp(0.9rem, 1.5vw, 1.2rem);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  font-family: var(--mono);
  margin-bottom: 0.25rem;
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.2;
  min-height: 1.2em;
  max-width: 100%;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.2;
  min-height: 1.2em;
}

.metric.is-up b { color: var(--up); }
.metric.is-down b { color: var(--down); }

.chart-pane {
  border: 1px solid var(--line);
  background: rgba(12, 24, 36, 0.7);
  border-radius: 16px;
  padding: 0.75rem 0.9rem 0.9rem;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  box-shadow: var(--shadow);
}

.chart-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  flex-shrink: 0;
}

.chart-toolbar p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.ranges {
  display: flex;
  gap: 0.35rem;
}

.range {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.range.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #062018;
  font-weight: 600;
}

.chart-frame {
  position: relative;
  flex: 1 1 auto;
  min-height: 260px;
  height: 100%;
}

.chart-frame canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.chart-spin {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(10, 22, 34, 0.35);
  z-index: 2;
}

.chart-spin::after {
  content: "";
  width: 28px;
  height: 28px;
  border: 2px solid rgba(232, 241, 246, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.chart-error {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  padding: 0.6rem 0.9rem;
  border-radius: 8px;
  background: rgba(10, 22, 34, 0.85);
  color: var(--down);
  font-size: 0.9rem;
  z-index: 3;
  text-align: center;
}

.watermark {
  position: absolute;
  right: 1rem;
  bottom: 0.2rem;
  font-size: clamp(5rem, 18vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  text-transform: uppercase;
  color: rgba(232, 241, 246, 0.04);
  pointer-events: none;
  z-index: 1;
  transform: rotate(-6deg);
  user-select: none;
}

.skel-coin {
  display: grid;
  grid-template-columns: 22px 36px 1fr;
  gap: 0.55rem;
  align-items: center;
  flex: 1 1 0;
  min-height: 0;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}

.skel-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(90deg, #1a2d3d 25%, #243b4f 50%, #1a2d3d 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
}

.skel-bar {
  display: block;
  height: 10px;
  border-radius: 6px;
  background: linear-gradient(90deg, #1a2d3d 25%, #243b4f 50%, #1a2d3d 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
}

.skel-rank {
  width: 14px;
  height: 12px;
}

.skel-lines {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.skel-lines .skel-bar {
  width: 72%;
  height: 11px;
}

.skel-lines .skel-bar.short {
  width: 48%;
  height: 9px;
  animation-delay: 0.15s;
}

/* Same box as live value - shimmer sits inside, no height jump */
.metric.is-skel b {
  color: transparent !important;
}

.metric.is-skel b::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 58%;
  height: 0.72em;
  border-radius: 6px;
  background: linear-gradient(90deg, #1a2d3d 25%, #243b4f 50%, #1a2d3d 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
}

.metric.is-skel[data-key="rank"] b::after { width: 1.15rem; }
.metric.is-skel[data-key="name"] b::after { width: 52%; }
.metric.is-skel[data-key="usd"] b::after,
.metric.is-skel[data-key="rub"] b::after { width: 72%; }
.metric.is-skel[data-key="mcap"] b::after,
.metric.is-skel[data-key="vol"] b::after { width: 48%; }
.metric.is-skel[data-key="supply"] b::after { width: 62%; }
.metric.is-skel[data-key="chg"] b::after { width: 42%; }

.metric.is-skel span {
  opacity: 0.7;
}

/* Full frame = canvas box; gutters = Chart.js tick lanes */
.skel-chart {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  padding: 4px 4px 2px 8px;
  box-sizing: border-box;
}

.skel-chart.is-hidden {
  display: none !important;
}

.skel-chart-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  gap: 0;
}

.skel-chart-plot {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  background-image:
    linear-gradient(to right, rgba(168, 198, 214, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(168, 198, 214, 0.08) 1px, transparent 1px);
  background-size: calc(100% / 5) 100%, 100% calc(100% / 4);
  background-position: 0 0, 0 0;
}

.skel-chart-y {
  flex: 0 0 52px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2px 0 2px 8px;
  box-sizing: border-box;
}

.skel-chart-y span {
  display: block;
  height: 8px;
  width: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, #1a2d3d 25%, #243b4f 50%, #1a2d3d 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
  opacity: 0.55;
}

.skel-chart-y span:nth-child(1) { width: 78%; animation-delay: 0.05s; }
.skel-chart-y span:nth-child(2) { width: 86%; animation-delay: 0.1s; }
.skel-chart-y span:nth-child(3) { width: 82%; animation-delay: 0.15s; }
.skel-chart-y span:nth-child(4) { width: 74%; animation-delay: 0.2s; }

.skel-chart-x {
  flex: 0 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 52px 0 0;
  box-sizing: border-box;
}

.skel-chart-x span {
  display: block;
  height: 8px;
  width: 2.6rem;
  border-radius: 4px;
  background: linear-gradient(90deg, #1a2d3d 25%, #243b4f 50%, #1a2d3d 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
  opacity: 0.55;
}

.skel-chart-x span:nth-child(odd) { width: 2.2rem; }
.skel-chart-x span:nth-child(3) { animation-delay: 0.12s; }
.skel-chart-x span:nth-child(5) { animation-delay: 0.18s; }

@keyframes shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 980px) {
  .stage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric.wide { grid-column: span 1; }
}

@media (max-width: 800px) {
  html, body {
    height: auto;
    overflow: auto;
  }

  #app {
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .rail-toggle { display: grid; }

  .shell {
    grid-template-columns: 1fr;
    height: auto;
    min-height: calc(100vh - 4.1rem);
    overflow: visible;
  }

  .rail {
    position: fixed;
    inset: 64px auto 0 0;
    top: 64px;
    height: calc(100vh - 64px);
    max-height: calc(100vh - 64px);
    overflow: auto;
    width: min(100%, 360px);
    z-index: 35;
    transform: translateX(-105%);
    transition: transform 0.25s ease;
    border-right: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .coin {
    flex: 0 0 auto;
    min-height: 64px;
  }

  #app.rail-open .rail {
    transform: translateX(0);
  }

  .stage {
    height: auto;
    min-height: calc(100vh - 4.1rem);
  }

  .chart-pane {
    min-height: 360px;
    height: 50vh;
  }

  .mast-nav {
    width: 100%;
    margin: 0.25rem 0 0;
    gap: 0.35rem 0.65rem;
  }

  .mast {
    flex-wrap: wrap;
  }

  .mast-meta {
    width: 100%;
    margin-left: 0;
    order: 4;
  }
}

/* Static content pages (cover depth) */
.page-app {
  min-height: 100vh;
  height: auto;
  display: flex;
  flex-direction: column;
}

.page {
  width: min(720px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.page-kicker {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page h1 {
  margin: 0 0 1.1rem;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.page h2 {
  margin: 2rem 0 0.7rem;
  font-size: 1.15rem;
}

.page p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 1.02rem;
}

.page-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.page-list li {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  color: var(--muted);
  line-height: 1.45;
}

.page-list strong {
  color: var(--ink);
  font-family: var(--mono);
  margin-right: 0.35rem;
}

.page-foot {
  margin-top: 2rem !important;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem !important;
}

.page a {
  color: var(--accent);
  text-decoration: none;
}

.page a:hover {
  text-decoration: underline;
}