/* ============ DTP brand tokens ============ */
:root {
  --bg: #07090d;            /* near-black canvas */
  --panel: #0b101a;         /* dark navy panel */
  --ink: #f2f1ec;           /* warm off-white */
  --ink-dim: #9aa3ad;       /* muted grey secondary */
  --ink-faint: rgba(242, 241, 236, 0.38);
  --mint: #05cc90;          /* DTP signal accent — used sparingly */
  --line: rgba(242, 241, 236, 0.12);
  --display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
}
#scene.dragging { cursor: grabbing; }
#scene.hovering { cursor: pointer; }

/* ============ atmosphere ============ */
.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 120% 90% at 50% 50%, transparent 52%, rgba(4, 5, 8, 0.6) 100%);
  z-index: 2;
}
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(255, 255, 255, 0.012) 3px,
    rgba(255, 255, 255, 0.012) 4px
  );
}

/* ============ header / footer ============ */
.ui-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px 36px;
  z-index: 10;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}
.brand img { height: 30px; display: block; }
.brand-wordmark {
  display: block;
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--ink);
  transform: translateY(0.5px);
  white-space: nowrap;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 28px;
  min-width: 0;
}
.status-line {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--mint);
  animation: pulse 2.4s ease-in-out infinite;
}
.menu-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s;
}
.menu-btn:hover { border-color: rgba(242, 241, 236, 0.4); background: rgba(242, 241, 236, 0.04); }
.menu-btn-lines {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: 0 0 18px;
}
.menu-btn i {
  position: absolute;
  left: 2px;
  display: block;
  width: 14px;
  height: 1px;
  border-radius: 999px;
  background: var(--ink);
  transform-origin: center;
  transition:
    background 260ms ease,
    box-shadow 260ms ease,
    transform 420ms cubic-bezier(0.34, 1.56, 0.64, 1),
    width 420ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.menu-btn i:first-child { top: 3px; }
.menu-btn i:last-child { top: 8px; }
.menu-btn:hover i,
.menu-btn.is-open i {
  background: var(--mint);
  box-shadow: 0 0 10px rgba(5, 204, 144, 0.72);
}
.menu-btn:hover i:first-child { transform: translateX(3px); width: 12px; }
.menu-btn:hover i:last-child { transform: translateX(-3px); width: 16px; }
.menu-btn.is-open i:first-child { transform: translateY(2.5px) rotate(42deg); width: 18px; }
.menu-btn.is-open i:last-child { transform: translateY(-2.5px) rotate(-42deg); width: 18px; }
.menu-btn > span:first-child { margin-right: 4px; }

.ui-footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 30px 36px;
  z-index: 10;
  pointer-events: none;
}
.tagline {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  line-height: 1.9;
  color: var(--ink-dim);
}
.hint {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hint-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--mint);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.55); opacity: 0.45; }
}

/* ============ equator ring nav ============ */
.ring-nav { display: contents; pointer-events: none; }
.ring-item {
  position: fixed;
  top: 0; left: 0;
  z-index: 8;
  transform: translate(-50%, -50%);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.24em;
  color: var(--ink-dim);
  background: rgba(7, 9, 13, 0.55);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 8.75px 15px;
  cursor: pointer;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  transition: color 0.25s, border-color 0.25s, box-shadow 0.25s;
  will-change: transform, opacity;
}
.ring-item::before {
  content: none;
}
.ring-item:hover {
  color: var(--ink);
  border-color: var(--line);
}
.ring-item-a11y {
  opacity: 0 !important;
  pointer-events: none !important;
}

/* ============ hover node panel ============ */
.node-panel {
  position: fixed;
  top: 0; left: 0;
  z-index: 9;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  transform: translate(24px, -50%);
  max-width: 282px;
  padding: 16px 17px 16px 20px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.31);
  border-left-color: rgba(5, 204, 144, 0.32);
  background:
    linear-gradient(142deg, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0.035) 32%, rgba(255, 255, 255, 0.01) 62%, rgba(5, 204, 144, 0.055) 100%);
  box-shadow:
    0 18px 58px rgba(0, 0, 0, 0.54),
    0 0 28px rgba(5, 204, 144, 0.11),
    inset 0 1px 1px rgba(255, 255, 255, 0.72),
    inset 1px 0 1px rgba(255, 255, 255, 0.28),
    inset 0 -1px 1px rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(4px) saturate(114%) brightness(1.025) contrast(1.015);
  -webkit-backdrop-filter: blur(4px) saturate(114%) brightness(1.025) contrast(1.015);
  isolation: isolate;
  overflow: hidden;
  will-change: transform;
}
.node-panel::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 17px;
  background:
    radial-gradient(130% 95% at 18% 0%, rgba(255, 255, 255, 0.44), rgba(255, 255, 255, 0.04) 34%, transparent 58%),
    radial-gradient(110% 90% at 100% 100%, rgba(5, 204, 144, 0.14), transparent 56%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.055), transparent 38%, rgba(255, 255, 255, 0.11) 72%, transparent);
  opacity: 0.62;
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: -1;
}
.node-panel::after {
  content: "";
  position: absolute;
  inset: -38% -20% auto 34%;
  height: 92%;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.04) 44%, transparent 70%);
  filter: blur(12px);
  opacity: 0.16;
  pointer-events: none;
  transform: rotate(13deg);
  z-index: -1;
}
.node-panel > * {
  position: relative;
  z-index: 1;
}
.np-index {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--mint);
  text-shadow: 0 0 14px rgba(5, 204, 144, 0.72), 0 1px 8px rgba(0, 0, 0, 0.72);
}
.np-title {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.96);
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.78);
}
.np-desc {
  font-family: var(--body);
  font-weight: 300;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mint);
  text-shadow: 0 0 14px rgba(5, 204, 144, 0.46), 0 1px 12px rgba(0, 0, 0, 0.82);
}
.np-enter {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: rgba(242, 241, 236, 0.64);
  margin-top: 4px;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.76);
}

/* ============ destination section page ============ */
.section {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: var(--bg);
  overflow-y: auto;
  visibility: hidden;
  clip-path: inset(100% 0 0 0);
}
.section-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 36px 110px;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 9vh;
}
.back-btn {
  background: none;
  border: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
}
.back-arrow { font-size: 15px; transition: transform 0.3s; }
.back-btn:hover .back-arrow { transform: translateX(-6px); }
.section-crumb {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
}
.section-hero { margin-bottom: 7vh; overflow: hidden; }
.section-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--mint);
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--display);
  font-size: clamp(44px, 8vw, 112px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 0.98;
  text-transform: uppercase;
  margin-bottom: 4vh;
}
.section-intro {
  font-family: var(--body);
  font-weight: 300;
  font-size: 19px;
  line-height: 1.7;
  color: rgba(242, 241, 236, 0.82);
  max-width: 640px;
}
.section-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 8vh;
}
.block {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px 24px 32px;
}
.block-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--mint);
  display: block;
  margin-bottom: 18px;
}
.block h3 {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
}
.block p {
  font-family: var(--body);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-dim);
}
.section-cta {
  border-top: 1px solid var(--line);
  padding-top: 5vh;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}
.cta-note {
  font-family: var(--body);
  font-weight: 300;
  font-size: 13px;
  color: var(--ink-faint);
  max-width: 420px;
}
.cta-btn {
  background: none;
  border: 1px solid var(--mint);
  color: var(--mint);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  padding: 16px 28px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
  white-space: nowrap;
}
.cta-btn:hover { background: var(--mint); color: var(--bg); }

/* ============ menu overlay ============ */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(7, 9, 13, 0.96);
  display: flex;
  flex-direction: column;
  padding: 26px 36px;
  visibility: hidden;
  opacity: 0;
}
.menu-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 7vh;
}
.menu-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
}
.menu-close {
  background: none;
  border: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  cursor: pointer;
  padding: 10px 0;
}
.menu-list { list-style: none; overflow-y: auto; }
.menu-list li {
  border-bottom: 1px solid var(--line);
}
.menu-list button {
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  display: flex;
  align-items: baseline;
  gap: 26px;
  padding: 22px 6px;
  cursor: pointer;
  color: var(--ink);
  transition: padding-left 0.25s;
}
.menu-list button:hover { padding-left: 18px; }
.menu-list .mi-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mint);
}
.menu-list .mi-title {
  font-family: var(--display);
  font-size: clamp(22px, 3.4vw, 38px);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}
.menu-list .mi-desc {
  font-family: var(--body);
  font-weight: 300;
  font-size: 13px;
  color: var(--ink-dim);
  margin-left: auto;
  text-align: right;
  max-width: 320px;
}

/* ============ loader ============ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  clip-path: inset(0 0 0% 0);
  will-change: clip-path;
}

.loader::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  opacity: 0.86;
  box-shadow: 0 0 24px rgba(0, 255, 178, 0.35);
}

.loader-logo { height: 40px; }
.loader-bar {
  width: 200px;
  height: 1px;
  background: rgba(242, 241, 236, 0.14);
  overflow: hidden;
}
.loader-bar i {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--mint);
  transition: width 0.4s ease-out;
}
.loader-status {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
}

/* ============ responsive ============ */
@media (max-width: 760px) {
  .ui-header {
    padding: 20px max(16px, env(safe-area-inset-right)) 20px max(16px, env(safe-area-inset-left));
    gap: 14px;
  }
  .header-right {
    flex: 0 0 auto;
    gap: 10px;
    margin-left: auto;
  }
  .brand img { height: 24px; }
  .brand {
    min-width: 0;
    gap: 9px;
  }
  .brand-wordmark {
    max-width: min(44vw, 13rem);
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 12px;
  }
  .status-line { display: none; }
  .menu-btn {
    flex: 0 0 auto;
    max-width: calc(100vw - 32px);
    padding: 9px 12px;
    gap: 8px;
    letter-spacing: 0.16em;
  }
  .ui-footer {
    padding: 22px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .tagline { font-size: 9px; }
  .hint { font-size: 9px; }
  .section-inner { padding: 22px 22px 90px; }
  .section-blocks { grid-template-columns: 1fr; }
  .section-cta { flex-direction: column; align-items: flex-start; }
  .menu-list .mi-desc { display: none; }
  .node-panel { display: none; }
}