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

:root {
  --ui-text: rgba(255, 255, 255, 0.96);
  --ui-text-soft: rgba(255, 255, 255, 0.80);
  --ui-text-muted: rgba(255, 255, 255, 0.62);
  --frost-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  --frost-bg-hover: linear-gradient(160deg, rgba(255, 255, 255, 0.19), rgba(255, 255, 255, 0.09));
  --frost-shadow: 0 8px 24px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  --ui-edge-x: 24px;
  --ui-edge-y: 24px;
  --ui-edge-mobile: 14px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --ui-top: calc(var(--safe-top) + var(--ui-edge-y));
  --ui-right: calc(var(--safe-right) + var(--ui-edge-x));
  --ui-bottom: calc(var(--safe-bottom) + var(--ui-edge-x));
  --ui-left: calc(var(--safe-left) + var(--ui-edge-x));
  --ui-top-mobile: calc(var(--safe-top) + var(--ui-edge-mobile));
  --ui-right-mobile: calc(var(--safe-right) + var(--ui-edge-mobile));
  --ui-bottom-mobile: calc(var(--safe-bottom) + var(--ui-edge-mobile));
  --ui-left-mobile: calc(var(--safe-left) + var(--ui-edge-mobile));
  --mode-cluster-neon: #ffbe2f;
  --mode-bridge-neon: #b66dff;
}

html, body {
  height: 100%;
  overflow: hidden;
  background-color: #000000;
  color: rgba(200, 210, 230, 0.85);
  font-family: "SF Mono", Menlo, Consolas, monospace;
  -webkit-font-smoothing: antialiased;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 10;
}

.frosted-panel {
  border: none;
  border-radius: 7px;
  background: var(--frost-bg);
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
}

.header {
  position: absolute;
  top: var(--ui-top);
  left: var(--ui-left);
}

.header.frosted-panel {
  padding: 9px 12px 8px;
  max-width: min(64ch, calc(100vw - 300px));
}

.title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.title a {
  color: var(--ui-text);
  text-decoration: none;
  pointer-events: all;
}

.title a:hover {
  color: rgba(255, 255, 255, 1);
}

.subtitle {
  font-size: 14px;
  color: var(--ui-text-soft);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

.metrics-menu {
  position: absolute;
  top: var(--ui-top);
  right: var(--ui-right);
  display: none;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  pointer-events: all;
}

.metrics-toggle {
  border: none;
  background: var(--frost-bg);
  color: var(--ui-text);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 26px;
  transition: color 120ms ease, background-color 120ms ease;
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
}

.metrics-toggle:hover {
  color: rgba(255, 255, 255, 1);
  background: var(--frost-bg-hover);
}

.metrics-triangle {
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid rgba(255, 255, 255, 0.95);
  transform: rotate(0deg);
  transition: transform 120ms ease;
}

.metrics-menu.open .metrics-triangle {
  transform: rotate(90deg);
}

.graph-metrics {
  width: 228px;
  border: none;
  background: var(--frost-bg);
  border-radius: 4px;
  padding: 8px 10px;
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
  box-shadow: var(--frost-shadow);
  pointer-events: all;
  display: none;
}

.metrics-menu.open .graph-metrics {
  display: block;
}

.fps-overlay {
  position: absolute;
  top: calc(var(--ui-top) + 36px);
  right: var(--ui-right);
  border: none;
  background: var(--frost-bg);
  color: var(--ui-text);
  border-radius: 4px;
  padding: 4px 7px;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.2;
  display: none;
  pointer-events: none;
  min-width: 108px;
  text-align: right;
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
}

.fps-overlay.visible {
  display: block;
}

.metrics-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ui-text-soft);
  margin-bottom: 5px;
}

.metrics-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--ui-text-soft);
}

.metrics-key {
  color: var(--ui-text-muted);
}

.metrics-val {
  color: var(--ui-text);
  text-align: right;
  min-width: 72px;
}

.info-btn {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: none;
  background: var(--frost-bg);
  color: var(--ui-text);
  font-size: 14px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
  transition: color 120ms ease, background-color 120ms ease, transform 80ms ease;
}

.info-btn:hover {
  color: rgba(255, 255, 255, 1);
  background: var(--frost-bg-hover);
}

.info-btn:active {
  transform: translateY(1px);
}

.info-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.8);
  outline-offset: 2px;
}

.timeline-info-btn {
  width: 24px;
  height: 24px;
  font-size: 12px;
  margin-left: 0;
  margin-top: 0;
  flex: 0 0 auto;
  position: relative;
  overflow: hidden;
}

.info-glyph {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 160ms ease, transform 180ms ease;
  pointer-events: none;
  line-height: 1;
}

.info-glyph.i {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.info-glyph.x {
  opacity: 0;
  transform: rotate(-80deg) scale(0.65);
  font-size: 14px;
  font-weight: 500;
}

.timeline-panel.info-open .timeline-info-btn .info-glyph.i {
  opacity: 0;
  transform: rotate(80deg) scale(0.65);
}

.timeline-panel.info-open .timeline-info-btn .info-glyph.x {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.info-panel {
  width: 100%;
  max-width: 100%;
  align-self: stretch;
  font-size: 12px;
  line-height: 1.45;
  letter-spacing: 0.03em;
  color: var(--ui-text-soft);
  display: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  pointer-events: none;
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 140ms ease, transform 140ms ease, visibility 140ms step-end, max-height 180ms ease;
}

.info-panel.frosted-panel {
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.timeline-panel.info-open .info-panel {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: all;
  max-height: 190px;
  overflow: auto;
  padding: 8px 10px;
  border-radius: 7px;
  background: var(--frost-bg);
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
  transition: opacity 160ms ease, transform 160ms ease, visibility 0ms, max-height 220ms ease;
}

.info-panel::-webkit-scrollbar {
  width: 7px;
}

.info-panel::-webkit-scrollbar-thumb {
  background: rgba(176, 186, 206, 0.35);
  border-radius: 999px;
}

.footer-note {
  position: absolute;
  right: var(--ui-right);
  bottom: var(--ui-bottom);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  pointer-events: all;
}

.copyright-note {
  font-size: 10px;
  color: rgba(102, 110, 126, 0.78);
  letter-spacing: 0.04em;
  line-height: 1.2;
  user-select: none;
}

.control-panel {
  position: absolute;
  left: var(--ui-left);
  right: auto;
  top: auto;
  bottom: calc(var(--ui-bottom));
  width: auto;
  max-width: calc(100vw - var(--ui-edge-x) * 2);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  pointer-events: all;
}

.mode-panel {
  position: absolute;
  top: var(--ui-top);
  right: var(--ui-right);
  left: auto;
  bottom: auto;
  min-width: 248px;
  width: min(52vw, 360px);
  max-width: min(52vw, 360px);
  pointer-events: all;
}

.control-btn {
  width: 100%;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 8px;
  cursor: pointer;
  border: none;
  background: var(--frost-bg);
  color: var(--ui-text);
  transition: color 120ms ease, background-color 120ms ease, box-shadow 120ms ease, transform 80ms ease;
  box-shadow: var(--frost-shadow);
  backdrop-filter: blur(9px) saturate(118%);
  -webkit-backdrop-filter: blur(9px) saturate(118%);
}

.control-btn:hover {
  color: rgba(255, 255, 255, 1);
  background: var(--frost-bg-hover);
}

.control-btn:active {
  transform: translateY(1px);
}

.control-btn.mode {
  border: none;
  background: var(--frost-bg);
  color: var(--ui-text);
}

.control-btn.mode:hover {
  color: rgba(255, 255, 255, 1);
  background: var(--frost-bg-hover);
}

.control-btn.mode.mode-switcher {
  width: 100%;
  white-space: nowrap;
  text-transform: none;
  letter-spacing: 0.03em;
  font-size: 10px;
  padding: 7px 10px;
  color: rgba(110, 118, 134, 0.9);
  overflow: hidden;
}

.control-btn.mode.mode-switcher:hover,
.control-btn.mode.mode-switcher.active {
  color: rgba(112, 120, 136, 0.92);
  background: var(--frost-bg-hover);
}

.mode-sep {
  color: rgba(90, 98, 114, 0.9);
}

.mode-seg {
  color: rgba(108, 116, 132, 0.88);
  transition: color 120ms ease, text-shadow 120ms ease, filter 120ms ease;
}

.mode-seg.active.mode-cluster {
  color: var(--mode-cluster-neon);
  text-shadow: 0 0 8px rgba(255, 168, 0, 0.52), 0 0 16px rgba(255, 130, 0, 0.34);
}

.mode-seg.active.mode-bridge {
  color: var(--mode-bridge-neon);
  text-shadow: 0 0 8px rgba(178, 110, 255, 0.56), 0 0 16px rgba(110, 56, 255, 0.34);
}

.mode-seg.active.mode-fibonacci {
  background: linear-gradient(90deg,
    #ff5a6a 0%,
    #ff9f3f 16%,
    #ffe65d 32%,
    #69ff73 48%,
    #52ddff 64%,
    #7986ff 82%,
    #ff67ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 10px rgba(206, 122, 255, 0.32);
  filter: saturate(1.18);
}

.timeline-panel {
  border-radius: 7px;
  padding: 8px 10px;
  min-width: 248px;
  width: min(52vw, 360px);
  max-width: min(52vw, 360px);
  pointer-events: all;
  display: none;
  flex-direction: column;
  gap: 7px;
}

.timeline-panel.visible {
  display: flex;
}

.timeline-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.timeline-title {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(146, 156, 176, 0.84);
}

.timeline-live-btn {
  border: none;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.12);
  color: rgba(215, 225, 246, 0.95);
  cursor: pointer;
}

.timeline-play-btn {
  border: none;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.12);
  color: rgba(215, 225, 246, 0.95);
  cursor: pointer;
}

.timeline-transport {
  display: none;
}

.timeline-play-btn.transport {
  min-width: 28px;
  text-align: center;
  padding: 3px 8px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
}

.timeline-play-btn.transport.ff {
  min-width: 24px;
  padding: 3px 6px;
  letter-spacing: -0.06em;
}

.timeline-live-btn.off {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(176, 188, 214, 0.84);
}

.timeline-play-btn.off {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(176, 188, 214, 0.84);
}

.timeline-slider {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 14px;
  background: transparent;
  cursor: pointer;
}

.timeline-slider::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(118, 130, 156, 0.55), rgba(184, 198, 226, 0.80));
}

.timeline-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  margin-top: -5px;
  border-radius: 999px;
  border: none;
  background: rgba(240, 244, 255, 0.98);
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.35);
}

.timeline-slider::-moz-range-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(118, 130, 156, 0.55), rgba(184, 198, 226, 0.80));
}

.timeline-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  border: none;
  background: rgba(240, 244, 255, 0.98);
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.35);
}

.timeline-slider:focus-visible {
  outline: none;
}

.timeline-slider:focus-visible::-webkit-slider-thumb {
  outline: 2px solid rgba(255, 255, 255, 0.88);
  outline-offset: 2px;
}

.timeline-meta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  letter-spacing: 0.03em;
  color: rgba(155, 166, 190, 0.88);
  min-height: 12px;
}

.timeline-index {
  color: rgba(124, 136, 160, 0.78);
  font-size: 9px;
  text-align: right;
  min-width: 70px;
}

@media (max-width: 900px) {
  .header { top: var(--ui-top-mobile); left: var(--ui-left-mobile); }
  .header.frosted-panel {
    padding: 7px 9px 6px;
    max-width: calc(100vw - 212px);
  }
  .metrics-menu {
    top: var(--ui-top-mobile);
    right: var(--ui-right-mobile);
  }
  .fps-overlay {
    top: calc(var(--ui-top-mobile) + 30px);
    right: var(--ui-right-mobile);
    font-size: 9px;
    min-width: 94px;
  }
  .metrics-toggle {
    font-size: 10px;
    padding: 4px 7px;
    min-height: 24px;
  }
  .graph-metrics {
    width: 184px;
    padding: 7px 8px;
  }
  .metrics-row { font-size: 10px; }
  .info-btn {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }
  .timeline-info-btn {
    width: 22px;
    height: 22px;
    font-size: 11px;
  }
  .info-panel {
    width: 100%;
    max-width: 100%;
    font-size: 11px;
    line-height: 1.4;
  }
  .timeline-panel.info-open .info-panel.frosted-panel { padding: 7px 8px; }
  .control-panel {
    left: var(--ui-left-mobile);
    right: auto;
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 56px);
    width: auto;
    max-width: calc(100vw - var(--ui-edge-mobile) * 2);
    gap: 6px;
  }
  .mode-panel {
    top: var(--ui-top-mobile);
    right: var(--ui-right-mobile);
    min-width: 220px;
    width: min(58vw, 320px);
    max-width: min(58vw, 320px);
  }
  .control-btn { font-size: 10px; padding: 6px 7px; }
  .control-btn.mode.mode-switcher { font-size: 9px; padding: 6px 8px; letter-spacing: 0.02em; }
  .timeline-panel { min-width: 220px; width: min(58vw, 320px); max-width: min(58vw, 320px); padding: 7px 8px; }
  .timeline-title { font-size: 9px; }
  .timeline-meta { font-size: 9px; }
  .footer-note { right: var(--ui-right-mobile); bottom: var(--ui-bottom-mobile); }
}

@media (max-width: 900px) and (orientation: portrait) {
  .control-panel {
    left: 50%;
    right: auto;
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 56px);
    transform: translateX(-50%);
    width: calc(100vw - var(--ui-edge-mobile) * 2);
    max-width: calc(100vw - var(--ui-edge-mobile) * 2);
    align-items: stretch;
  }
  .mode-panel {
    left: 50%;
    right: auto;
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 20px);
    transform: translateX(-50%);
    width: calc(100vw - var(--ui-edge-mobile) * 2);
    max-width: calc(100vw - var(--ui-edge-mobile) * 2);
    min-width: 0;
  }
  .mode-panel .control-btn.mode.mode-switcher {
    width: 100%;
  }
  .timeline-panel {
    min-width: 0;
    width: 100%;
    max-width: 100%;
  }
}

@media (max-width: 760px) and (orientation: portrait) {
  .header {
    left: var(--ui-left-mobile);
    right: var(--ui-right-mobile);
  }
  .header.frosted-panel {
    max-width: none;
    width: auto;
    padding: 8px 10px 7px;
  }
  .title {
    font-size: 16px;
    letter-spacing: 0.09em;
  }
  .subtitle {
    font-size: 12px;
  }
  .control-panel {
    left: 50%;
    right: auto;
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 56px);
    transform: translateX(-50%);
    width: calc(100vw - var(--ui-edge-mobile) * 2);
    max-width: calc(100vw - var(--ui-edge-mobile) * 2);
    align-items: stretch;
  }
  .mode-panel {
    left: 50%;
    right: auto;
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 20px);
    transform: translateX(-50%);
    width: calc(100vw - var(--ui-edge-mobile) * 2);
    max-width: calc(100vw - var(--ui-edge-mobile) * 2);
    min-width: 0;
  }
  .mode-panel .control-btn.mode.mode-switcher {
    width: 100%;
    font-size: 10px;
    padding: 8px 10px;
    letter-spacing: 0.01em;
  }
  .timeline-panel {
    min-width: 0;
    width: 100%;
    max-width: 100%;
  }
  .fps-overlay {
    top: calc(var(--ui-top-mobile) + 114px);
    right: var(--ui-right-mobile);
  }
  .info-btn {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }
  .timeline-info-btn {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }
  .info-panel {
    width: 100%;
    max-width: 100%;
    font-size: 11px;
    line-height: 1.42;
    max-height: 42vh;
  }
  .footer-note {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    align-items: center;
    text-align: center;
    gap: 1px;
  }
  .copyright-note {
    font-size: 9px;
    letter-spacing: 0.03em;
  }
}

@media (max-width: 430px) and (orientation: portrait) {
  .title {
    font-size: 14px;
  }
  .subtitle {
    font-size: 11px;
  }
  .control-panel {
    top: auto;
    bottom: calc(var(--ui-bottom-mobile) + 52px);
    padding: 12px 0px;
  }
  .mode-panel {
    bottom: calc(var(--ui-bottom-mobile) + 20px);
	    padding: 12px 0px;
  }
  .mode-panel .control-btn.mode.mode-switcher {
    width: 100%;
    font-size: 9px;
    padding: 7px 9px;
  }
  .timeline-panel {
    min-width: 0;
    width: 100%;
    max-width: 100%;
    padding: 6px 8px;
  }
  .fps-overlay {
    top: calc(var(--ui-top-mobile) + 104px);
  }
}