:root {
  --bg: #0d0f12;
  --bg-elev: #14181f;
  --border: rgba(200, 210, 225, 0.12);
  --text: #e8ecf4;
  --muted: #8b95a8;
  --accent: #7ee787;
  --accent-dim: rgba(126, 231, 135, 0.35);
  --strike: #ff9f43;
  --patrol: #54a0ff;
  --danger: #ff6b6b;
  --silk: rgba(220, 230, 245, 0.22);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  --radius: 10px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
}

.web-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(84, 160, 255, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(126, 231, 135, 0.05), transparent),
    var(--bg);
  opacity: 1;
}

.web-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--silk) 1px, transparent 1px),
    linear-gradient(var(--silk) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
  opacity: 0.4;
}

.header,
.layout,
.footer {
  position: relative;
  z-index: 1;
}

.header {
  padding: 1.75rem 1.5rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.brand {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.brand-icon {
  font-size: 2.25rem;
  line-height: 1;
  filter: drop-shadow(0 0 12px var(--accent-dim));
}

.brand h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 52ch;
}

.tagline em {
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
}

.layout {
  display: grid;
  gap: 1rem;
  padding: 0 1.5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  grid-template-columns: minmax(240px, 280px) 1fr minmax(220px, 300px);
  align-items: start;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 600;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.field span:first-child {
  font-size: 0.8rem;
  color: var(--muted);
}

input[type="url"],
input[type="number"] {
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
}

input[type="url"]:focus,
input[type="number"]:focus {
  outline: 2px solid var(--accent-dim);
  border-color: var(--accent);
}

input[type="range"] {
  width: calc(100% - 2.5rem);
  accent-color: var(--accent);
  vertical-align: middle;
}

.range-val {
  display: inline-block;
  min-width: 1.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-left: 0.35rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.65rem;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}

.check input {
  accent-color: var(--accent);
}

.hint {
  font-size: 0.72rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.btn {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.55rem 0.9rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.primary {
  background: linear-gradient(135deg, rgba(126, 231, 135, 0.25), rgba(84, 160, 255, 0.2));
  border-color: var(--accent-dim);
  color: var(--accent);
}

.btn.ghost {
  background: transparent;
}

.phase {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.phase-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.phase-value {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--strike);
  text-transform: lowercase;
}

.viz-wrap {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  min-height: 320px;
}

#webCanvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: radial-gradient(ellipse at center, #1a222e 0%, #0d1015 100%);
}

.viz-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  margin-top: 0.65rem;
  font-size: 0.75rem;
  color: var(--muted);
  align-items: center;
}

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.35rem;
  vertical-align: middle;
}

.dot.prey {
  background: var(--patrol);
  box-shadow: 0 0 8px var(--patrol);
}

.dot.current {
  background: var(--strike);
  box-shadow: 0 0 10px var(--strike);
}

.spider-mini {
  font-size: 0.9rem;
}

.stats {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

.log {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 420px;
  overflow-y: auto;
  font-size: 0.72rem;
  font-family: var(--mono);
}

.log li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  word-break: break-all;
}

.log li:first-child {
  border-top: 1px solid var(--border);
}

.log .ok {
  color: var(--accent);
}

.log .err {
  color: var(--danger);
}

.sublinks {
  max-width: 1200px;
  margin: 0 auto 1.25rem;
  padding: 0 1.5rem;
}

.sublinks-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

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

.sublinks-title {
  margin: 0 0 0.5rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-weight: 600;
}

.sublinks-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sublinks-list li {
  margin: 0.35rem 0;
}

.sublinks-list a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.sublinks-list a:hover {
  text-decoration: underline;
}

.footer {
  text-align: center;
  padding: 1rem 1.5rem 2rem;
  color: var(--muted);
  font-size: 0.78rem;
}