:root {
  --bg: #08111f;
  --bg-elevated: rgba(12, 22, 40, 0.78);
  --bg-soft: rgba(18, 32, 56, 0.72);
  --line: rgba(150, 186, 255, 0.16);
  --line-strong: rgba(150, 186, 255, 0.28);
  --text: #f6f8ff;
  --muted: #9fb2d5;
  --accent: #7ef0c4;
  --accent-strong: #3be3a5;
  --danger: #ff7e95;
  --warning: #ffd166;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --mono: "IBM Plex Mono", monospace;
  --display: "Space Grotesk", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--display);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(16, 122, 198, 0.28), transparent 28%),
    radial-gradient(circle at top right, rgba(59, 227, 165, 0.18), transparent 22%),
    linear-gradient(180deg, #0b1629 0%, #08111f 55%, #050b15 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 240, 196, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 240, 196, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 90%);
}

.app-shell {
  width: min(1440px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.hero,
.control-bar,
.board {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
}

.hero-description {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  gap: 16px;
}

.summary-card {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(23, 39, 66, 0.95), rgba(11, 19, 34, 0.92));
  border: 1px solid var(--line);
}

.summary-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-card strong {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
}

.control-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  align-items: end;
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
}

.search-field,
.control-group {
  display: grid;
  gap: 10px;
}

.control-group-grow {
  min-width: 220px;
}

.range-inputs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.range-field {
  display: grid;
  gap: 8px;
}

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

.slider-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.slider-value {
  color: var(--accent);
  font-size: 0.9rem;
}

.slider-field {
  display: grid;
  gap: 8px;
  padding: 12px 14px 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(5, 10, 18, 0.8);
}

.slider-field input[type="range"] {
  width: 100%;
  margin: 0;
  accent-color: var(--accent-strong);
  cursor: pointer;
}

.slider-scale {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.78rem;
  font-family: var(--mono);
}

.search-field span,
.control-label {
  color: var(--muted);
  font-size: 0.85rem;
}

.search-field input,
.range-field input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
  color: var(--text);
  background: rgba(5, 10, 18, 0.8);
  outline: none;
}

.search-field input:focus,
.range-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(126, 240, 196, 0.12);
}

.segmented {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(5, 10, 18, 0.68);
}

.chip,
.sort-button,
.refresh-button {
  border: 0;
  border-radius: 999px;
  font: inherit;
  color: var(--text);
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    opacity 180ms ease;
}

.chip {
  min-width: 68px;
  padding: 10px 14px;
  background: transparent;
  color: var(--muted);
}

.chip.active {
  background: linear-gradient(135deg, rgba(126, 240, 196, 0.18), rgba(59, 227, 165, 0.34));
  color: var(--text);
}

.sort-button,
.refresh-button {
  padding: 14px 18px;
  background: rgba(15, 26, 46, 0.94);
  border: 1px solid var(--line);
}

.sort-button:hover,
.refresh-button:hover,
.chip:hover {
  transform: translateY(-1px);
}

.refresh-button {
  background: linear-gradient(135deg, rgba(126, 240, 196, 0.18), rgba(46, 93, 189, 0.28));
}

.formula-pill {
  margin: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--warning);
  background: rgba(9, 17, 28, 0.78);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.board {
  margin-top: 20px;
  padding: 18px;
  border-radius: var(--radius-xl);
}

.board-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.board-head-main {
  display: grid;
  gap: 10px;
}

.board-tabs {
  width: fit-content;
}

#status-text,
.board-note {
  margin: 0;
  color: var(--muted);
}

.pairs-list {
  display: grid;
  gap: 14px;
}

.pagination-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.pagination-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.pagination-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.pagination-button {
  min-width: 42px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 24, 42, 0.94);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    opacity 180ms ease;
}

.pagination-button:hover {
  transform: translateY(-1px);
}

.pagination-button.is-active {
  background: linear-gradient(135deg, rgba(126, 240, 196, 0.18), rgba(59, 227, 165, 0.34));
}

.pagination-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.pair-card {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  align-items: start;
  border-radius: 22px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(16, 28, 48, 0.92), rgba(8, 15, 27, 0.95)),
    linear-gradient(135deg, rgba(126, 240, 196, 0.05), transparent 38%);
}

.pair-main,
.chart-side {
  display: grid;
  gap: 10px;
  align-content: start;
}

.pair-main {
  align-self: start;
}

.chart-block {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.pair-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.pair-heading-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pair-symbol {
  margin: 0;
  font-size: clamp(1.05rem, 1.2vw, 1.35rem);
  line-height: 1.05;
}

.pair-family {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.pair-rank {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(126, 240, 196, 0.1);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.76rem;
}

.favorite-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 24, 42, 0.94);
  color: var(--muted);
  font: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease;
}

.favorite-button:hover {
  transform: translateY(-1px);
}

.favorite-button.is-active {
  color: var(--warning);
  border-color: rgba(255, 209, 102, 0.35);
  background: rgba(255, 209, 102, 0.08);
}

.pair-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.metric {
  display: grid;
  gap: 6px;
  align-content: center;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg-soft);
  border: 1px solid rgba(150, 186, 255, 0.1);
  min-height: 70px;
}

.metric span {
  display: block;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.metric strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.92rem;
  word-break: break-word;
  text-align: left;
}

.metric-change.is-positive {
  color: var(--accent);
}

.metric-change.is-negative {
  color: var(--danger);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: baseline;
}

.chart-title {
  color: var(--muted);
  font-size: 0.82rem;
}

.chart-value {
  font-family: var(--mono);
  font-size: 0.9rem;
}

.chart-canvas {
  position: relative;
  min-height: 92px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(126, 240, 196, 0.08), transparent 55%),
    rgba(7, 13, 24, 0.94);
}

.chart-placeholder,
.empty-state {
  display: grid;
  place-items: center;
  min-height: 92px;
  padding: 12px;
  color: var(--muted);
  text-align: center;
}

.sparkline {
  width: 100%;
  height: 100%;
  display: block;
}

.axis-label {
  font-family: var(--mono);
  font-size: 10px;
  fill: rgba(246, 248, 255, 0.72);
}

.chart-error {
  color: var(--danger);
}

.chart-value.is-positive {
  color: var(--accent);
}

.chart-value.is-negative {
  color: var(--danger);
}

.chart-side {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.empty-state {
  border: 1px dashed var(--line-strong);
  border-radius: 20px;
}

@media (max-width: 1180px) {
  .hero,
  .pair-card {
    grid-template-columns: 1fr;
  }

  .control-group-grow {
    grid-column: 1 / -1;
  }

  .chart-side,
  .pair-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pair-main {
    align-self: start;
  }

  .pair-metrics {
    grid-template-rows: none;
  }

  .metric {
    min-height: 64px;
  }
}

@media (max-width: 780px) {
  .app-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 10px;
  }

  .hero,
  .control-bar,
  .board {
    padding: 16px;
  }

  .control-bar {
    grid-template-columns: 1fr;
  }

  .board-head {
    flex-direction: column;
  }

  .range-inputs,
  .pagination-bar {
    grid-template-columns: 1fr;
  }

  .pagination-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .pair-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: none;
  }

  .chart-side {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .pair-metrics {
    grid-template-columns: 1fr;
  }
}