:root {
  --bg: #0a1116;
  --bg2: #111922;
  --surface: rgba(18, 26, 33, 0.92);
  --surface2: rgba(24, 34, 44, 0.9);
  --border: rgba(151, 190, 181, 0.1);
  --border-hover: rgba(60, 185, 90, 0.28);
  --text: #e9f0ec;
  --muted: #94a59f;
  --dim: #5a716b;
  --green: #7bf0be;
  --green2: #5ce6a0;
  --red: #ff8392;
  --teal: #58d7ff;
  --blue: #6ab4ff;
  --purple: #b59cff;
  --orange: #ffbc72;
  --yellow: #ffd56b;
  --nav-h: 64px;
  --font: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", Consolas, monospace;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.35);
  --radius: 20px;
  --radius-sm: 14px;
  --nav-accent: var(--green);
}

body {
  background:
    radial-gradient(
      ellipse 70% 60% at 10% 50%,
      rgba(123, 240, 190, 0.06),
      transparent
    ),
    radial-gradient(
      ellipse 50% 50% at 85% 40%,
      rgba(88, 215, 255, 0.05),
      transparent
    ),
    radial-gradient(
      ellipse 50% 40% at 50% 90%,
      rgba(255, 188, 114, 0.04),
      transparent
    ),
    linear-gradient(180deg, #081016 0%, #0b141c 50%, #081015 100%);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(123, 240, 190, 0.22);
}

/* ── Nav brand dot ── */
.nav-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

/* ── Layout ── */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ── Hero ── */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 64px) 40px 64px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 70% 60% at 10% 50%,
      rgba(123, 240, 190, 0.07) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 50% 50% at 85% 40%,
      rgba(88, 215, 255, 0.05) 0%,
      transparent 60%
    );
}

.hero-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(123, 240, 190, 0.08);
  border: 1px solid rgba(123, 240, 190, 0.2);
  color: var(--green);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.04em;
  margin-bottom: 14px;
  max-width: 860px;
}

.hero h1 span {
  background: linear-gradient(135deg, #3cb95a 0%, #30c8e8 65%, #b490ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--muted);
  font-size: 1rem;
  max-width: 560px;
  line-height: 1.72;
  margin-bottom: 36px;
}

.hero-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--teal);
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  max-width: 680px;
}

.stat-cell {
  background: var(--surface);
  padding: 18px 20px;
  text-align: center;
}

.stat-val {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--green);
}

.stat-lbl {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 4px;
}

/* ── Sections ── */
.section {
  padding: 68px 40px;
  border-top: 1px solid var(--border);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 6px;
}

.section-title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.section-sub {
  color: var(--muted);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 36px;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  transition:
    border-color 0.3s ease,
    transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.card-title {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.card-note {
  font-size: 0.8rem;
  color: var(--dim);
  margin-bottom: 14px;
  line-height: 1.6;
}

/* ── Grid ── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

.grid-full {
  grid-column: 1 / -1;
}

/* ── Chart containers ── */
.chart-box {
  position: relative;
  height: 240px;
}

.chart-box-tall {
  position: relative;
  height: 300px;
}

/* ── KV rows ── */
.kv-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}

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

.kv-key {
  color: var(--muted);
}

.kv-val {
  font-family: var(--mono);
  font-weight: 600;
}

/* ── GA Controls ── */
.ga-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 18px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 20px;
}

.gen-display {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text);
  min-width: 120px;
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font);
  transition: all 0.15s;
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-primary:hover {
  background: var(--green2);
}

.btn-ghost {
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--muted);
}

.btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

/* ── GA grid ── */
.ga-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

/* ── Parameter cells ── */
.param-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.param-cell {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}

.param-name {
  font-size: 0.67rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 3px;
}

.param-val {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--green);
}

.param-unit {
  font-size: 0.8rem;
  color: var(--muted);
  margin-left: 2px;
}

.param-bar-bg {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 7px;
}

.param-bar-fill {
  height: 3px;
  background: var(--green);
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* ── Fitness badge ── */
.fitness-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--green);
  background: rgba(60, 185, 90, 0.1);
  border: 1px solid rgba(60, 185, 90, 0.22);
  border-radius: 8px;
  padding: 4px 12px;
}

/* ── Trade list ── */
.trade-row {
  display: grid;
  grid-template-columns: 36px 1fr 68px 90px;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  background: var(--bg2);
  border-radius: 8px;
  font-size: 0.8rem;
}

.tn {
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.tr {
  color: var(--muted);
}

.tp {
  color: var(--green);
  font-weight: 600;
  font-family: var(--mono);
}

.tl {
  color: var(--red);
  font-weight: 600;
  font-family: var(--mono);
}

/* ── Algo step diagram ── */
.algo-flow {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
  padding: 22px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.algo-step {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  text-align: center;
  min-width: 110px;
}

.algo-step .icon {
  font-size: 1.5rem;
  margin-bottom: 5px;
}

.algo-step .lbl {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--teal);
}

.algo-step .sub {
  font-size: 0.67rem;
  color: var(--muted);
  margin-top: 3px;
}

.algo-arrow {
  color: var(--dim);
  font-size: 1.3rem;
  padding: 0 8px;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 30px 40px;
  color: var(--dim);
  font-size: 0.8rem;
}

footer a {
  color: var(--teal);
  text-decoration: none;
}

/* ── Custom GA Params Panel ── */
.ga-cfg-panel {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 28px;
  margin-top: 28px;
}

.ga-cfg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(188px, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}

.ga-cfg-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ga-cfg-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.ga-cfg-input {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: var(--mono);
  padding: 7px 12px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
  box-sizing: border-box;
}

.ga-cfg-input:focus {
  border-color: var(--teal);
}

.ga-cfg-hint {
  font-size: 0.68rem;
  color: var(--dim);
}

.ga-cfg-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.ga-cfg-status {
  font-size: 0.8rem;
  color: var(--teal);
  font-family: var(--mono);
}

/* ── Responsive ── */
@media (max-width: 840px) {
  .section {
    padding: 48px 20px;
  }

  .hero {
    padding: calc(var(--nav-h) + 40px) 20px 40px;
  }

  .stats-strip {
    grid-template-columns: 1fr 1fr;
  }

  .grid-2,
  .grid-3,
  .ga-grid {
    grid-template-columns: 1fr;
  }

  .param-grid {
    grid-template-columns: 1fr 1fr;
  }

  .algo-flow {
    flex-direction: column;
    align-items: flex-start;
  }
}