:root {
  --bg: #0c0f14;
  --bg-card: #141a22;
  --bg-elevated: #1a222d;
  --border: #2a3544;
  --text: #f4f7fb;
  --muted: #8b9bb0;
  --green: #5ee06d;
  --green-dim: #3db84c;
  --green-glow: rgba(94, 224, 109, 0.25);
  --accent: #7dd3fc;
  --danger: #f87171;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--green-glow), transparent),
    radial-gradient(circle at 100% 100%, rgba(125, 211, 252, 0.06), transparent 40%);
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1100px, 100% - 2rem);
  margin: 0 auto;
}

/* Header */
.site-header {
  padding: 1.25rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-dim), var(--green));
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  box-shadow: 0 0 24px var(--green-glow);
}

.brand h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 0.875rem;
}

/* Layout */
main {
  padding: 2rem 0 4rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .grid-main {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  .grid-main .results-panel {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* Form */
.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.input-row {
  display: flex;
  gap: 0.5rem;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  font-family: var(--mono);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}

select {
  width: auto;
  min-width: 5.5rem;
  font-family: var(--font);
}

.range-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

input[type="range"] {
  flex: 1;
  accent-color: var(--green);
}

.range-value {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--green);
  min-width: 3rem;
  text-align: right;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  cursor: pointer;
}

.toggle-row input {
  accent-color: var(--green);
}

/* Network stats bar */
.network-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat-pill {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
}

.stat-pill .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.stat-pill .value {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--green);
  margin-top: 0.15rem;
  word-break: break-all;
}

.live-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  margin-right: 0.35rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Results */
.results-panel .hero-metric {
  text-align: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.hero-metric .amount {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--green);
  line-height: 1.1;
}

.hero-metric .unit {
  font-size: 1rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.metric {
  background: var(--bg-elevated);
  border-radius: 8px;
  padding: 0.75rem;
}

.metric .label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric .value {
  font-family: var(--mono);
  font-size: 1rem;
  margin-top: 0.2rem;
}

.profit-positive { color: var(--green); }
.profit-negative { color: var(--danger); }

/* Footer note */
.note {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.site-footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

.error-banner {
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: none;
}

.error-banner.visible {
  display: block;
}

.hidden {
  display: none !important;
}

.accuracy-notes {
  font-size: 0.82rem;
  color: var(--muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.pools-section {
  margin-top: 1.5rem;
}

.pools-section h2 .muted {
  font-weight: 400;
  font-size: 0.75rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--muted);
}

.pools-section h2 .muted a {
  color: var(--accent);
}

.input-warning {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  background: rgba(80, 160, 255, 0.1);
  border: 1px solid rgba(80, 160, 255, 0.35);
  border-radius: 8px;
  font-size: 0.9rem;
  line-height: 1.45;
  color: #b8d4ff;
}

.input-warning.hidden {
  display: none;
}

.share-invalid {
  color: #ff6b6b !important;
}

.field-hint {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.4;
}

.pools-empty {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 200, 80, 0.08);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.pools-empty.hidden {
  display: none;
}

.pools-intro {
  font-size: 0.85rem;
  color: var(--muted);
  margin: -0.5rem 0 1rem;
  line-height: 1.45;
}

.table-wrap {
  overflow-x: auto;
}

.pools-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.pools-table th,
.pools-table td {
  padding: 0.55rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.pools-table th {
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pools-table .mono {
  font-family: var(--mono);
  color: var(--green);
}

.pools-table a {
  color: var(--green);
  text-decoration: none;
}

.pools-table a:hover {
  text-decoration: underline;
}

.pools-table .row-unknown td {
  color: var(--muted);
  font-style: italic;
}

.tag {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tag-live {
  background: rgba(94, 224, 109, 0.15);
  color: var(--green);
}

.tag-off {
  background: var(--bg-elevated);
  color: var(--muted);
}

.tag-est {
  background: rgba(125, 211, 252, 0.12);
  color: var(--accent);
}