/* =========================================================
   ORBITAL — design tokens
   Most values are overridden at runtime from data/config.json
   via inline custom properties on :root (see js/app.js).
   ========================================================= */
:root {
  --bg-top: #05070d;
  --bg-bottom: #0a0f1c;
  --accent: #6ed2ff;
  --accent-2: #b98bff;
  --text: #eaf2ff;
  --muted: #8aa0c0;
  --glass: rgba(20, 28, 46, 0.55);

  --orbit-radius-x: 380px;
  --orbit-radius-y: 150px;
  --cube-size: 96px;
  --orbit-tilt: 8deg;

  --win-w: 640px;
  --win-h: 460px;
  --morph-duration: 850ms;
  --ease-organic: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-soft: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(ellipse at 50% 30%, var(--bg-bottom), var(--bg-top) 75%);
  position: relative;
}

img { max-width: 100%; display: block; }
button { font-family: inherit; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #00131c;
  padding: 0.5em 1em;
  z-index: 999;
  border-radius: 0 0 6px 0;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================================================
   Circuit-board backdrop + starfield
   ========================================================= */
#circuit-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

#starfield {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-repeat: repeat;
  opacity: 0.8;
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: clamp(1rem, 3vw, 2.2rem) 1rem 0;
}
.site-title {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.site-subtitle {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: clamp(0.78rem, 1.2vw, 0.95rem);
  letter-spacing: 0.04em;
}

.social-links {
  position: fixed;
  left: 50%;
  bottom: clamp(1rem, 4vh, 2.2rem);
  transform: translateX(-50%);
  display: flex;
  align-items: flex-end;
  gap: 0.7rem;
  z-index: 50;
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--text);
  background: var(--glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.4);
  text-decoration: none;
  will-change: transform;
  transform-origin: bottom center;
  transition: transform 160ms var(--ease-out-soft), box-shadow 220ms, border-color 220ms, color 220ms;
}
.social-link svg { width: 18px; height: 18px; }
.social-link:hover,
.social-link:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 10px 26px rgba(0,0,0,0.5), 0 0 22px rgba(110,210,255,0.55);
}
.social-links.is-settling .social-link {
  transition: transform 320ms var(--ease-organic), box-shadow 220ms, border-color 220ms, color 220ms;
}

/* =========================================================
   Exit transition — plays briefly when an external link opens
   ========================================================= */
.exit-transition {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at var(--exit-x, 50%) var(--exit-y, 50%),
    var(--accent) 0%, var(--accent-2) 28%, var(--bg-bottom) 62%, #000 100%);
  clip-path: circle(0% at var(--exit-x, 50%) var(--exit-y, 50%));
  transition: clip-path 1100ms var(--ease-organic), opacity 250ms linear;
}
.exit-transition.is-active {
  opacity: 1;
  clip-path: circle(150% at var(--exit-x, 50%) var(--exit-y, 50%));
}

/* =========================================================
   Orbit stage
   ========================================================= */
.orbit-stage {
  position: relative;
  z-index: 2;
  width: 100%;
  height: calc(100vh - 110px);
  perspective: 1600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.central-image {
  position: absolute;
  width: var(--central-size, 220px);
  height: var(--central-size, 220px);
  border-radius: 50%;
  object-fit: cover;
  z-index: 2;
  box-shadow: 0 0 60px var(--central-glow, rgba(110,210,255,0.55)), 0 0 120px rgba(0,0,0,0.4) inset;
  animation: breathe var(--breathing-cycle, 6s) ease-in-out infinite;
  background: #0d1326;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.035); }
}

.central-glow {
  position: absolute;
  width: calc(var(--central-size, 220px) * 1.9);
  height: calc(var(--central-size, 220px) * 1.9);
  border-radius: 50%;
  background: radial-gradient(circle, var(--central-glow, rgba(110,210,255,0.55)) 0%, transparent 70%);
  filter: blur(6px);
  z-index: 1;
  animation: glow-pulse var(--breathing-cycle, 6s) ease-in-out infinite;
}
@keyframes glow-pulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.85; }
}

.orbit-container {
  position: absolute;
  inset: 0;
  z-index: 3;
  transform-style: preserve-3d;
  transform: rotateX(var(--orbit-tilt, 8deg));
  pointer-events: none;
}

/* =========================================================
   Orbit item (positioned by orbit.js via inline transform)
   ========================================================= */
.orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--cube-size);
  height: var(--cube-size);
  margin: calc(var(--cube-size) / -2) 0 0 calc(var(--cube-size) / -2);
  pointer-events: auto;
  will-change: transform;
}

.orbit-item.is-window,
.orbit-item.is-morphing {
  position: fixed;
  top: 0;
  left: 0;
  margin: 0;
  z-index: 50;
}

/* =========================================================
   3D Cube
   ========================================================= */
.cube {
  position: relative;
  width: 100%;
  height: 100%;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  perspective: 800px;
  transition: filter 220ms var(--ease-out-soft);
}
.cube:focus-visible { outline: none; }
.cube:focus-visible .cube-3d { box-shadow: 0 0 0 3px var(--accent); }

.cube-3d {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform: var(--swing-transform, rotateX(0) rotateY(0) rotateZ(0));
  transition: transform 260ms var(--ease-out-soft);
}

.cube-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: linear-gradient(160deg, rgba(110,210,255,0.18), rgba(20,28,46,0.85));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.45), inset 0 0 18px rgba(255,255,255,0.04);
  backface-visibility: hidden;
  overflow: hidden;
}

.face-front { transform: translateZ(calc(var(--cube-size) / 2)); }
.face-back  { transform: translateZ(calc(var(--cube-size) / -2)) rotateY(180deg); }
.face-right { transform: translateX(calc(var(--cube-size) / 2)) rotateY(90deg); }
.face-left  { transform: translateX(calc(var(--cube-size) / -2)) rotateY(-90deg); }
.face-top   { transform: translateY(calc(var(--cube-size) / -2)) rotateX(90deg); }
.face-bottom{ transform: translateY(calc(var(--cube-size) / 2)) rotateX(-90deg); }

.cube-thumb {
  width: 46%;
  height: 46%;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(110,210,255,0.4);
}
.cube-title {
  font-size: clamp(0.55rem, 1vw, 0.72rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  text-align: center;
  padding: 0 6px;
}

/* IMPORTANT: the glow filter must live on .cube (the non-rotating perspective
   parent), never on .cube-3d itself — a CSS filter applied to a
   transform-style:preserve-3d element breaks backface-visibility culling in
   Chromium, making the cube render as a flat (sometimes mirrored) card
   instead of a true rotating volume. */
.cube:hover,
.cube:focus-visible {
  filter: drop-shadow(0 0 14px var(--accent));
}
.cube:hover .face-front,
.cube:focus-visible .face-front {
  border-color: var(--accent);
  box-shadow: 0 8px 28px rgba(0,0,0,0.5), 0 0 22px rgba(110,210,255,0.45), inset 0 0 18px rgba(255,255,255,0.06);
}
.cube:hover { cursor: pointer; }

/* Unfolding transient state: faces separate before flattening */
.orbit-item.is-unfolding .face-front  { transform: translateZ(calc(var(--cube-size) * 1.4)); }
.orbit-item.is-unfolding .face-back   { transform: translateZ(calc(var(--cube-size) * -1.4)) rotateY(180deg); opacity: 0; }
.orbit-item.is-unfolding .face-right  { transform: translateX(calc(var(--cube-size) * 1.4)) rotateY(90deg); opacity: 0; }
.orbit-item.is-unfolding .face-left   { transform: translateX(calc(var(--cube-size) * -1.4)) rotateY(-90deg); opacity: 0; }
.orbit-item.is-unfolding .face-top    { transform: translateY(calc(var(--cube-size) * -1.4)) rotateX(90deg); opacity: 0; }
.orbit-item.is-unfolding .face-bottom { transform: translateY(calc(var(--cube-size) * 1.4)) rotateX(-90deg); opacity: 0; }
.orbit-item.is-unfolding .cube-face { transition: transform var(--morph-duration) var(--ease-organic), opacity var(--morph-duration) var(--ease-organic); }

.orbit-item.is-flattening .cube-3d { transform: none !important; }
.orbit-item.is-flattening .face-front,
.orbit-item.is-flattening .face-back,
.orbit-item.is-flattening .face-right,
.orbit-item.is-flattening .face-left,
.orbit-item.is-flattening .face-top,
.orbit-item.is-flattening .face-bottom {
  transition: transform var(--morph-duration) var(--ease-organic), opacity calc(var(--morph-duration) * 0.6) var(--ease-organic);
}
.orbit-item.is-flattening .face-front { transform: translateZ(0); }
.orbit-item.is-flattening .face-back,
.orbit-item.is-flattening .face-right,
.orbit-item.is-flattening .face-left,
.orbit-item.is-flattening .face-top,
.orbit-item.is-flattening .face-bottom { opacity: 0; transform: translateZ(0); }

.orbit-item.is-window .cube { display: none; }
.orbit-item.is-morphing .app-window,
.orbit-item.is-window .app-window { display: flex; }

/* =========================================================
   Window
   ========================================================= */
.app-window {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  border-radius: 14px;
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow: 0 24px 60px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.04) inset;
  overflow: hidden;
  opacity: 0;
  transition: opacity calc(var(--morph-duration) * 0.7) var(--ease-organic);
}
.orbit-item.is-morphing .app-window,
.orbit-item.is-window .app-window { opacity: 1; }

.orbit-item.is-window.is-dragging .app-window,
.orbit-item.is-window.is-resizing .app-window {
  transition: none;
}

.window-titlebar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.5rem 0 1rem;
  height: 42px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), transparent);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.window-titlebar:active { cursor: grabbing; }

.window-title {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.window-controls { display: flex; gap: 0.4rem; }
.win-btn {
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 160ms, transform 160ms;
}
.win-btn svg { width: 10px; height: 10px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.win-btn:hover { transform: scale(1.1); background: rgba(255,255,255,0.16); }
.win-close:hover { background: #ff5d6c; border-color: #ff5d6c; color: #1a0507; }
.win-maximize svg rect { fill: none; stroke: currentColor; stroke-width: 1.2; }

.window-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 1.2rem 1.4rem 1.6rem;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) transparent;
}
.window-body::-webkit-scrollbar { width: 8px; }
.window-body::-webkit-scrollbar-thumb { background: rgba(110,210,255,0.4); border-radius: 8px; }

.window-content h1, .window-content h2, .window-content h3 {
  color: var(--text);
  line-height: 1.25;
  margin: 1.1em 0 0.5em;
}
.window-content h1 { font-size: 1.5rem; }
.window-content h2 { font-size: 1.2rem; border-bottom: 1px solid rgba(255,255,255,0.12); padding-bottom: 0.3em; }
.window-content h3 { font-size: 1.02rem; color: var(--accent); }
.window-content p { line-height: 1.65; color: var(--text); opacity: 0.92; }
.window-content a { color: var(--accent); text-decoration: underline; text-decoration-color: rgba(110,210,255,0.4); }
.window-content a:hover { text-decoration-color: var(--accent); }
.window-content strong { color: #fff; }
.window-content em { color: var(--accent-2); }
.window-content blockquote {
  margin: 1em 0;
  padding: 0.6em 1em;
  border-left: 3px solid var(--accent);
  background: rgba(255,255,255,0.04);
  border-radius: 0 8px 8px 0;
  color: var(--muted);
}
.window-content ul, .window-content ol { padding-left: 1.4em; line-height: 1.65; }
.window-content code {
  background: rgba(255,255,255,0.08);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: "Cascadia Code", Consolas, monospace;
}
.window-content pre {
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0.9em 1em;
  border-radius: 8px;
  overflow-x: auto;
}
.window-content pre code { background: none; padding: 0; }
.window-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.92em;
}
.window-content th, .window-content td {
  border: 1px solid rgba(255,255,255,0.14);
  padding: 0.5em 0.7em;
  text-align: left;
}
.window-content th { background: rgba(255,255,255,0.06); color: var(--accent); }
.window-content hr { border: none; border-top: 1px solid rgba(255,255,255,0.12); margin: 1.4em 0; }

.window-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.7rem;
  margin-top: 1.2rem;
}
.window-gallery img {
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.12);
  transition: transform 220ms var(--ease-out-soft), box-shadow 220ms;
}
.window-gallery img:hover { transform: scale(1.03); box-shadow: 0 8px 22px rgba(0,0,0,0.4); }

/* Resize handles */
.resize-handle { position: absolute; z-index: 2; }
.rh-n, .rh-s { left: 8px; right: 8px; height: 6px; cursor: ns-resize; }
.rh-n { top: -3px; } .rh-s { bottom: -3px; }
.rh-e, .rh-w { top: 8px; bottom: 8px; width: 6px; cursor: ew-resize; }
.rh-e { right: -3px; } .rh-w { left: -3px; }
.rh-ne, .rh-nw, .rh-se, .rh-sw { width: 14px; height: 14px; }
.rh-ne { top: -4px; right: -4px; cursor: nesw-resize; }
.rh-nw { top: -4px; left: -4px; cursor: nwse-resize; }
.rh-se { bottom: -4px; right: -4px; cursor: nwse-resize; }
.rh-sw { bottom: -4px; left: -4px; cursor: nesw-resize; }

.orbit-item.is-window.is-maximized .resize-handle { display: none; }
.orbit-item.is-window.is-maximized .window-titlebar { cursor: default; }

/* =========================================================
   Docking preview
   ========================================================= */
.dock-preview {
  position: fixed;
  z-index: 40;
  border: 2px solid var(--accent);
  background: rgba(110, 210, 255, 0.16);
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms var(--ease-out-soft), top 180ms var(--ease-out-soft), left 180ms var(--ease-out-soft), width 180ms var(--ease-out-soft), height 180ms var(--ease-out-soft);
}
.dock-preview.is-visible { opacity: 1; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px) {
  .site-title { font-size: 1.4rem; }
}

@media (max-width: 640px) {
  .orbit-stage { height: calc(100vh - 90px); }
  .social-link { width: 34px; height: 34px; }
  .social-link svg { width: 16px; height: 16px; }
  .app-window { border-radius: 10px; }
  .window-body { padding: 1rem; }
  .orbit-item.is-window {
    width: 92vw !important;
    height: 78vh !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
  }
}

.fatal-error {
  max-width: 640px;
  margin: 10vh auto;
  padding: 1.6rem 1.8rem;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 14px;
  backdrop-filter: blur(14px);
  text-align: left;
  line-height: 1.6;
}
.fatal-error h2 { color: var(--accent); margin-top: 0; }
.fatal-error pre {
  background: rgba(0,0,0,0.4);
  padding: 0.8em 1em;
  border-radius: 8px;
  overflow-x: auto;
}

/* =========================================================
   Reduced motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  .central-image, .central-glow { animation: none !important; }
  .cube-3d { transition: none !important; }
  .orbit-item { transition: none !important; }
  * { scroll-behavior: auto !important; }
}
body.reduced-motion .central-image,
body.reduced-motion .central-glow { animation: none !important; }