/* CHICKEN1 · 3D Universe Star Map
   军规：用光造球，用深度造空，不用炫技毁可读。 */
:root {
  --bg: #02060b;
  --star-core: #fff1c8;
  --text: #eef4fb;
  --text-dim: #8fa0b5;
  --accent: #3de0c8;
  --accent-2: #ff6a3d;
  --panel: rgba(4, 10, 18, 0.88);
  --panel-border: rgba(120, 200, 255, 0.16);
  --cat-ai: #5ec8ff;
  --cat-mail: #ff7ab6;
  --cat-learn: #7dffb3;
  --cat-ops: #ffc857;
  --cat-own: #c9a0ff;
  --header-h: 56px;
  --chip-h: 44px;
  --planet-s: 34px;
  --planet-m: 48px;
  --planet-l: 64px;
  --label-size: 12px;
  --light-x: 32%;
  --light-y: 28%;
  --stage-tilt: 58deg;
  --stage-yaw: -10deg;
  --perspective: 1400px;
  --font-ui: "Noto Sans SC", system-ui, sans-serif;
  --font-display: "Orbitron", "Noto Sans SC", sans-serif;
  --font-mono: "Share Tech Mono", ui-monospace, monospace;
}

html[data-theme="cruise"] {
  --bg: #02060b;
  --accent: #3de0c8;
}

html[data-theme="combat"] {
  --bg: #0a0304;
  --accent: #ff6a3d;
  --text: #ffe9e2;
  --panel-border: rgba(255, 120, 80, 0.2);
}

html[data-theme="dock"] {
  --bg: #0a1018;
  --accent: #7eb6ff;
  --panel: rgba(10, 18, 28, 0.92);
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* —— Background layers —— */
.space-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 30%, #0a1524 0%, var(--bg) 55%, #000 100%);
}

.space-bg__stars {
  position: absolute;
  inset: -2%;
  background: url("./assets/universe/stars-milky.webp") center / cover no-repeat;
  opacity: 0.62;
  transform: scale(1.05);
}

.space-bg__nebula {
  position: absolute;
  inset: -8%;
  background: url("./assets/universe/nebula-soft.webp") 30% 40% / cover no-repeat;
  opacity: 0.22;
  mix-blend-mode: screen;
  filter: saturate(0.9) contrast(1.05);
  animation: nebulaDrift 80s linear infinite;
}

.space-bg__dust {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 70%, rgba(80, 140, 255, 0.08), transparent 40%),
    radial-gradient(ellipse at 80% 20%, rgba(255, 120, 180, 0.06), transparent 35%);
  opacity: 0.9;
}

.space-bg__vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 48%, transparent 28%, rgba(0, 0, 0, 0.45) 70%, rgba(0, 0, 0, 0.82) 100%);
}

html[data-theme="combat"] .space-bg__nebula {
  background-image: url("./assets/universe/nebula-lagoon.webp");
  filter: hue-rotate(-25deg) saturate(1.15);
  opacity: 0.2;
}

@keyframes nebulaDrift {
  from {
    transform: scale(1.08) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-2%, 1.5%, 0);
  }
}

/* —— Header —— */
.uh-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--header-h);
  display: grid;
  grid-template-columns: minmax(150px, 210px) minmax(160px, 1fr) auto auto;
  gap: 12px 16px;
  align-items: center;
  padding: 0 18px;
  background: linear-gradient(180deg, rgba(2, 6, 11, 0.9), rgba(2, 6, 11, 0.25) 75%, transparent);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #fff 0%, var(--star-core) 32%, #f0a040 62%, transparent 70%),
    radial-gradient(circle, rgba(255, 200, 120, 0.5), transparent 70%);
  box-shadow:
    0 0 20px rgba(255, 210, 120, 0.55),
    inset -4px -6px 10px rgba(0, 0, 0, 0.35);
  flex-shrink: 0;
}

.brand-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.brand-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: linear-gradient(90deg, #fff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.uh-search-wrap {
  display: block;
  min-width: 0;
}

.uh-search {
  width: 100%;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.4);
  color: var(--text);
  padding: 0 14px;
  font-size: 13px;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.uh-search::placeholder {
  color: var(--text-dim);
}

.uh-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent);
}

.uh-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.uh-count {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

.uh-meta-sep {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.uh-time {
  font-size: 12px;
  color: var(--text-dim);
}

.uh-themes {
  display: flex;
  gap: 4px;
}

.uh-themes button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
}

.uh-themes button.is-active {
  color: #041018;
  background: var(--accent);
  border-color: transparent;
  font-weight: 700;
}

.uh-themes button:focus-visible,
.orbit-chips button:focus-visible,
.dock-panel button:focus-visible,
.planet:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* —— 3D Stage —— */
.starfield {
  position: relative;
  z-index: 1;
  height: 100vh;
  height: 100dvh;
  padding: var(--header-h) 0 var(--chip-h);
  overflow: hidden;
}

.space-perspective {
  position: relative;
  width: 100%;
  height: 100%;
  perspective: var(--perspective);
  perspective-origin: 50% 42%;
}

.space-stage {
  position: absolute;
  left: 50%;
  top: 48%;
  width: min(96vmin, 920px);
  height: min(96vmin, 920px);
  margin: 0;
  transform-style: preserve-3d;
  transform: translate(-50%, -50%) rotateX(var(--stage-tilt)) rotateZ(var(--stage-yaw));
  will-change: transform;
}

/* soft floor light under system */
.space-stage::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 78%;
  height: 78%;
  transform: translate(-50%, -50%) translateZ(-4px);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(80, 160, 255, 0.1), transparent 68%);
  filter: blur(8px);
  pointer-events: none;
}

/* Orbit disks — not thin lines */
.orbit-disks {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  pointer-events: none;
}

.orbit-disk {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%) translateZ(0);
  border: 1px solid rgba(160, 210, 240, 0.14);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.25) inset,
    0 0 24px rgba(100, 180, 255, 0.04);
  background: radial-gradient(
    ellipse at center,
    transparent 62%,
    rgba(140, 190, 230, 0.045) 72%,
    rgba(140, 190, 230, 0.09) 86%,
    rgba(140, 190, 230, 0.03) 94%,
    transparent 100%
  );
  transition: opacity 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.orbit-disk::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(180, 230, 255, 0.07) 40deg,
    transparent 90deg,
    rgba(180, 230, 255, 0.05) 200deg,
    transparent 280deg
  );
  opacity: 0.7;
  mix-blend-mode: screen;
}

.orbit-disk.is-hot {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent) inset,
    0 0 28px color-mix(in srgb, var(--accent) 18%, transparent);
  background: radial-gradient(
    ellipse at center,
    transparent 60%,
    color-mix(in srgb, var(--accent) 8%, transparent) 78%,
    color-mix(in srgb, var(--accent) 14%, transparent) 90%,
    transparent 100%
  );
}

.orbit-disk.is-dim {
  opacity: 0.28;
}

/* CORE star */
.core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 72px;
  height: 72px;
  margin: -36px 0 0 -36px;
  transform-style: preserve-3d;
  transform: translateZ(18px) rotateX(calc(-1 * var(--stage-tilt))) rotateZ(calc(-1 * var(--stage-yaw)));
  z-index: 50;
  pointer-events: none;
}

.core-halo {
  position: absolute;
  inset: -90%;
  background: radial-gradient(circle, rgba(255, 220, 150, 0.45) 0%, rgba(255, 160, 60, 0.12) 35%, transparent 68%);
  filter: blur(2px);
  animation: corePulse 5.5s ease-in-out infinite;
}

.core-corona {
  position: absolute;
  inset: -35%;
  border-radius: 50%;
  background: url("./assets/universe/star-core-glow.webp") center / contain no-repeat;
  opacity: 0.95;
  mix-blend-mode: screen;
}

.core-body {
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, #fff 0%, var(--star-core) 28%, #ffb040 58%, #a04010 100%),
    url("./assets/universe/star-core.webp") center / cover;
  box-shadow:
    0 0 40px rgba(255, 200, 100, 0.75),
    0 0 80px rgba(255, 140, 40, 0.35),
    inset -8px -10px 18px rgba(80, 20, 0, 0.45),
    inset 6px 8px 14px rgba(255, 255, 255, 0.35);
}

.core-body::after {
  content: "CORE";
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: rgba(255, 230, 180, 0.7);
  text-shadow: 0 0 8px rgba(255, 180, 80, 0.5);
}

@keyframes corePulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.12);
    opacity: 1;
  }
}

.planets-layer {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
}

/* —— Planet 3D sphere —— */
.planet {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  margin: 0;
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
  color: inherit;
  transform-style: preserve-3d;
  z-index: 10;
  touch-action: manipulation;
  --size: var(--planet-m);
  --spectral: var(--cat-ai);
}

.planet__anchor {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  /* billboard: counter stage tilt so sphere faces camera */
  transform: rotateZ(calc(-1 * var(--stage-yaw))) rotateX(calc(-1 * var(--stage-tilt)));
}

.planet__shadow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--size) * 1.35);
  height: calc(var(--size) * 0.42);
  margin: calc(var(--size) * 0.42) 0 0 calc(var(--size) * -0.675);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.55), transparent 70%);
  filter: blur(5px);
  transform: rotateX(75deg) translateZ(-2px);
  opacity: 0.55;
  pointer-events: none;
}

.planet__ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--size) * 1.85);
  height: calc(var(--size) * 1.85);
  margin: calc(var(--size) * -0.925) 0 0 calc(var(--size) * -0.925);
  border-radius: 50%;
  transform: rotateX(72deg) rotateZ(-22deg) translateZ(1px);
  background: radial-gradient(
    ellipse at center,
    transparent 42%,
    color-mix(in srgb, var(--spectral) 35%, rgba(255, 255, 255, 0.2)) 52%,
    transparent 53%,
    color-mix(in srgb, var(--spectral) 50%, rgba(255, 255, 255, 0.15)) 60%,
    transparent 68%
  );
  opacity: 0;
  pointer-events: none;
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--spectral) 40%, transparent));
}

.planet.is-pinned .planet__ring,
.planet[data-access="密钥"] .planet__ring,
.planet[data-access="Basic Auth"] .planet__ring {
  opacity: 0.9;
}

.planet[data-access="密钥"] .planet__ring {
  background: radial-gradient(
    ellipse at center,
    transparent 40%,
    rgba(255, 220, 120, 0.55) 48%,
    transparent 50%,
    rgba(255, 200, 80, 0.45) 58%,
    transparent 66%,
    rgba(255, 220, 140, 0.25) 72%,
    transparent 78%
  );
}

.planet__body {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--size);
  height: var(--size);
  margin: calc(var(--size) / -2) 0 0 calc(var(--size) / -2);
  border-radius: 50%;
  overflow: hidden;
  transform: translateZ(12px);
  transform-style: preserve-3d;
  isolation: isolate;
  transition: transform 0.22s ease, filter 0.2s ease, box-shadow 0.22s ease;
  box-shadow:
    0 10px 28px rgba(0, 0, 0, 0.55),
    0 0 22px color-mix(in srgb, var(--spectral) 28%, transparent),
    inset -10px -14px 22px rgba(0, 0, 0, 0.55),
    inset 8px 10px 16px rgba(255, 255, 255, 0.12);
}

.planet__surface {
  position: absolute;
  inset: -8%;
  border-radius: 50%;
  background-image: var(--tex);
  background-size: 220% 100%;
  background-position: 0% center;
  background-repeat: repeat-x;
  filter: saturate(1.05) contrast(1.05);
  animation: planetSpin 28s linear infinite;
  z-index: 1;
}

.planet__diffuse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 2;
  background: radial-gradient(
    circle at var(--light-x) var(--light-y),
    rgba(255, 255, 255, 0.28) 0%,
    rgba(255, 255, 255, 0.05) 22%,
    transparent 48%,
    rgba(0, 0, 0, 0.15) 100%
  );
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.planet__terminator {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 3;
  background: linear-gradient(
    105deg,
    rgba(0, 0, 0, 0.72) 0%,
    rgba(0, 0, 0, 0.45) 28%,
    rgba(0, 0, 0, 0.08) 52%,
    transparent 68%
  );
  filter: blur(1.2px);
  pointer-events: none;
}

.planet__specular {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 4;
  background: radial-gradient(
    circle at 34% 26%,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.35) 10%,
    transparent 24%
  );
  mix-blend-mode: screen;
  opacity: 0.85;
  pointer-events: none;
}

.planet__atmosphere {
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  z-index: 5;
  box-shadow:
    inset 0 0 14px color-mix(in srgb, var(--spectral) 55%, transparent),
    0 0 16px color-mix(in srgb, var(--spectral) 30%, transparent);
  pointer-events: none;
}

.planet__atmosphere::after {
  content: "";
  position: absolute;
  inset: -6%;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--spectral) 35%, transparent);
  opacity: 0.45;
  filter: blur(0.5px);
}

.planet__pin {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--size) + 14px);
  height: calc(var(--size) + 14px);
  margin: calc((var(--size) + 14px) / -2) 0 0 calc((var(--size) + 14px) / -2);
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 70%, #fff);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 45%, transparent);
  opacity: 0;
  transform: translateZ(16px);
  pointer-events: none;
}

.planet.is-pinned .planet__pin {
  opacity: 0.85;
  animation: pinPulse 2.8s ease-in-out infinite;
}

@keyframes planetSpin {
  from {
    background-position: 0% center;
  }
  to {
    background-position: 200% center;
  }
}

@keyframes pinPulse {
  0%,
  100% {
    transform: translateZ(16px) scale(1);
    opacity: 0.75;
  }
  50% {
    transform: translateZ(16px) scale(1.06);
    opacity: 1;
  }
}

.planet:hover .planet__body,
.planet:focus-visible .planet__body {
  transform: translateZ(12px) scale(1.14);
  filter: brightness(1.08);
}

.planet.is-selected .planet__body {
  transform: translateZ(22px) scale(1.22);
  box-shadow:
    0 14px 36px rgba(0, 0, 0, 0.55),
    0 0 0 2px var(--accent),
    0 0 36px color-mix(in srgb, var(--accent) 45%, transparent),
    inset -10px -14px 22px rgba(0, 0, 0, 0.5),
    inset 8px 10px 16px rgba(255, 255, 255, 0.15);
}

.planet.is-dim {
  opacity: 0.14;
  pointer-events: none;
  filter: grayscale(0.45);
}

.planet.is-match-pulse .planet__body {
  animation: matchPulse 1.5s ease-in-out infinite;
}

@keyframes matchPulse {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.35) saturate(1.2);
  }
}

.planet[data-size="S"] {
  --size: var(--planet-s);
}

.planet[data-size="M"] {
  --size: var(--planet-m);
}

.planet[data-size="L"] {
  --size: var(--planet-l);
}

.planet[data-cat="AI/API"] {
  --spectral: var(--cat-ai);
}

.planet[data-cat="注册邮箱"] {
  --spectral: var(--cat-mail);
}

.planet[data-cat="内容学习"] {
  --spectral: var(--cat-learn);
}

.planet[data-cat="系统网络"] {
  --spectral: var(--cat-ops);
}

.planet[data-cat="自有服务"] {
  --spectral: var(--cat-own);
}

/* Screen-space labels (billboard, always readable) */
.labels-layer {
  position: absolute;
  inset: 0;
  z-index: 20;
  pointer-events: none;
}

.planet-label {
  position: absolute;
  transform: translate(-50%, 0);
  max-width: 92px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  font-size: var(--label-size);
  line-height: 1.15;
  text-align: center;
  color: var(--text);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.95);
  white-space: normal;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-weight: 500;
  transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.planet-label.is-selected {
  color: #fff;
  font-weight: 700;
  background: color-mix(in srgb, var(--accent) 22%, rgba(0, 0, 0, 0.55));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent);
}

.planet-label.is-dim {
  opacity: 0.12;
}

/* —— Dock —— */
.dock-panel {
  position: fixed;
  top: calc(var(--header-h) + 18px);
  right: 16px;
  z-index: 70;
  width: min(360px, calc(100vw - 24px));
  padding: 18px;
  border-radius: 16px;
  background:
    linear-gradient(145deg, rgba(20, 40, 60, 0.25), transparent 40%),
    var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px) saturate(1.1);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(60, 140, 255, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: dockIn 0.22s ease;
}

.dock-panel[hidden] {
  display: none !important;
}

@keyframes dockIn {
  from {
    opacity: 0;
    transform: translateX(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.dock-planet-preview {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  margin-bottom: 10px;
  background-size: cover;
  background-position: center;
  box-shadow:
    inset -6px -8px 14px rgba(0, 0, 0, 0.55),
    inset 4px 5px 10px rgba(255, 255, 255, 0.15),
    0 0 18px color-mix(in srgb, var(--accent) 30%, transparent);
}

.dock-close {
  position: absolute;
  top: 8px;
  right: 10px;
  border: 0;
  background: transparent;
  color: var(--text-dim);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.dock-cat {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.dock-name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding-right: 24px;
}

.dock-desc {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--text-dim);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.dock-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0 0 14px;
}

.dock-meta div {
  margin: 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.dock-meta dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.dock-meta dd {
  margin: 4px 0 0;
  font-size: 12px;
  word-break: break-all;
}

.dock-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-engage {
  appearance: none;
  border: 0;
  border-radius: 8px;
  min-width: 120px;
  height: 36px;
  padding: 0 16px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 90%, #fff), var(--accent));
  color: #041018;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  cursor: pointer;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 30%, transparent);
}

.btn-engage:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  height: 32px;
  min-width: 72px;
  padding: 0 12px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.btn-ghost.is-on {
  border-color: var(--accent);
  color: var(--accent);
}

.dock-url {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  word-break: break-all;
  opacity: 0.85;
}

/* chips */
.orbit-chips {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  height: var(--chip-h);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 0 12px 8px;
  background: linear-gradient(0deg, rgba(2, 6, 11, 0.92), transparent);
  pointer-events: none;
}

.orbit-chips button {
  pointer-events: auto;
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.32);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 6px 11px;
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.orbit-chips button.is-active {
  color: #041018;
  background: var(--accent);
  border-color: transparent;
  font-weight: 700;
}

.uh-credit {
  position: fixed;
  left: 10px;
  bottom: 46px;
  z-index: 30;
  margin: 0;
  font-size: 9px;
  color: rgba(255, 255, 255, 0.28);
  font-family: var(--font-mono);
  pointer-events: none;
  max-width: 42vw;
}

@media (prefers-reduced-motion: reduce) {
  .core-halo,
  .planet__surface,
  .planet.is-match-pulse .planet__body,
  .planet.is-pinned .planet__pin,
  .space-bg__nebula {
    animation: none !important;
  }

  .planet__body,
  .dock-panel {
    transition: none !important;
  }
}

@media (max-width: 900px) {
  :root {
    --stage-tilt: 52deg;
    --planet-s: 28px;
    --planet-m: 38px;
    --planet-l: 50px;
  }

  .uh-header {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    height: auto;
    min-height: var(--header-h);
    padding: 8px 12px;
    gap: 8px;
  }

  .uh-search-wrap {
    grid-column: 1 / -1;
  }

  .uh-meta {
    display: none;
  }

  .starfield {
    padding-top: 96px;
  }

  .dock-panel {
    top: auto;
    bottom: calc(var(--chip-h) + 8px);
    right: 8px;
    left: 8px;
    width: auto;
  }

  .uh-credit {
    display: none;
  }
}

@media (max-width: 560px) {
  .orbit-chips {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .space-stage {
    width: 120vmin;
    height: 120vmin;
  }
}