.study-orb-dialog {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 0;
  overflow: auto;
  border: 0;
  color: var(--text-bold);
  background: var(--bg-void);
  animation: study-background-in 1.6s cubic-bezier(.4, 0, .2, 1) both;
}
.study-orb-dialog::backdrop { background: transparent; }
.study-orb-dialog[open] { display: block; }
.study-orb-dialog[hidden], .study-orb-dialog [hidden] { display: none !important; }
.study-orb-dialog .arena-wrapper {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
  animation: none;
  pointer-events: none;
}
.study-orb-dialog .arena {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  padding: max(115px, 13vh) 0 0;
  opacity: 1 !important;
  filter: none !important;
  transform: none !important;
}
.study-orb-dialog .arena > :not(.core-system):not(.dial),
.study-orb-dialog .orbit-meter { display: none !important; }
.study-orb-dialog .dial {
  animation: study-wheel-enter 1.6s cubic-bezier(.33, 0, .2, 1) both;
}
.study-orb-dialog.study-orb-preparing .dial { animation: none; opacity: 0; }
.study-orb-dialog .core-system {
  --orb-size: clamp(150px, 24vh, 260px);
  visibility: visible !important;
  opacity: 1 !important;
  animation: study-orb-enter 1.6s cubic-bezier(.22, 1, .36, 1) both, study-orb-float 12s 1.6s cubic-bezier(.45, 0, .55, 1) infinite !important;
}
.study-orb-dialog.study-orb-preparing .core-system { animation: none !important; }
.study-orb-dialog .core-mass {
  transform: scale(var(--study-orb-scale, 1)) !important;
  filter: none !important;
  /* A huge box-shadow is clipped to a hard square while the core scales in,
     so the halo is a soft radial gradient on a pseudo-element instead. */
  box-shadow: none !important;
  transition: transform 2.4s cubic-bezier(.37, 0, .24, 1) !important;
  will-change: transform;
}
.study-orb-dialog .core-mass::after {
  content: "";
  position: absolute;
  inset: calc(var(--orb-size) * -0.85);
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(90, 210, 255, 0.34) 0%, rgba(0, 165, 255, 0.2) 24%, rgba(0, 130, 255, 0.08) 40%, rgba(0, 120, 255, 0) 62%);
}
body[data-theme="CLASSIC"] .study-orb-dialog .core-mass::after { opacity: 0.6; }
.study-orb-dial { display: none; }
.study-orb-dialog .study-orb-dial {
  display: block;
  position: absolute;
  z-index: 4;
  width: calc(var(--orb-size) * 1.45);
  height: calc(var(--orb-size) * 1.45);
  overflow: visible;
  transform: rotate(-90deg);
  pointer-events: none;
}
.study-orb-dial circle { fill: none; stroke-width: 1; }
.study-orb-dial-track { stroke: var(--text-bold); opacity: .14; }
.study-orb-dial-value {
  stroke: var(--text-bold);
  opacity: .76;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: var(--study-orb-offset, 100);
  transition: stroke-dashoffset .25s linear, opacity .9s ease, stroke-width .9s ease;
}
/* While open with motion allowed, script draws the ring every frame: no CSS easing to fight it. */
.study-orb-dialog.study-orb-smooth .study-orb-dial-value {
  stroke-dasharray: var(--study-orb-len, 0) 200;
  stroke-dashoffset: var(--study-orb-tail, 0);
  transition: opacity .9s ease, stroke-width .9s ease;
}
.study-orb-dial-tip { display: none; }
.study-orb-dialog.study-orb-smooth .study-orb-dial-tip {
  display: block;
  fill: var(--text-bold);
  opacity: .9;
  filter: drop-shadow(0 0 3px var(--text-bold));
  transition: opacity .6s ease;
}
.study-orb-dialog[data-orb-state="paused"] .study-orb-dial-tip { opacity: .45; }
.study-orb-dialog[data-orb-state="paused"] .study-orb-dial-value { opacity: .4; }
.study-orb-dialog[data-orb-state="ending"] .study-orb-dial-value { opacity: 1; stroke-width: 1.5; }
.study-orb-dialog[data-orb-state="complete"] .study-orb-dial-value { opacity: 1; }
.study-orb-dialog.study-orb-cue .study-orb-dial { animation: study-orb-cue 2.4s cubic-bezier(.37, 0, .63, 1); }
@keyframes study-orb-cue {
  0%, 100% { opacity: 1; transform: rotate(-90deg) scale(1); }
  45% { opacity: .7; transform: rotate(-90deg) scale(1.045); }
}
@keyframes study-orb-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(calc(var(--orb-u, 1px) * -5)); }
}
body.gateway-active .study-orb-dialog .orb-energy-field { opacity: 1; }
.study-orb-interface {
  position: relative;
  z-index: 20;
  min-height: 100%;
  padding: 16px clamp(16px, 4vw, 48px) 28px;
  pointer-events: none;
  animation: study-controls-in 1.8s cubic-bezier(.22, 1, .36, 1) both;
}
.study-orb-header { display: flex; justify-content: flex-end; }
.study-orb-header > div:first-child {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.study-orb-header-actions, .study-orb-tabs, .study-orb-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px 12px;
}
.study-orb-tabs {
  display: inline-flex;
  max-width: 100%;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 999px;
  gap: 0;
  background: var(--panel);
}
.study-orb-dialog button, .study-orb-dialog select, .study-orb-dialog input {
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text-dim);
  background: transparent;
  font: inherit;
  pointer-events: auto;
  transition: color .35s ease, background-color .45s ease, border-color .45s ease;
}
.study-orb-dialog button {
  cursor: pointer;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.study-orb-dialog button:hover, .study-orb-dialog button[aria-pressed="true"] { color: var(--text-bold); }
.study-orb-dialog button[aria-pressed="true"] {
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-bold) 12%, transparent);
}
.study-orb-dialog button:focus-visible, .study-orb-dialog input:focus-visible, .study-orb-dialog select:focus-visible {
  outline: 2px solid var(--text-bold);
  outline-offset: 2px;
}
.study-orb-controls { width: min(100%, 560px); margin: max(300px, 41vh) auto 0; text-align: center; }
.study-orb-readout { margin-bottom: 16px; }
.study-orb-tabs button { flex: 0 1 auto; }
.study-orb-phase, .study-orb-date, .study-orb-state, .study-orb-visual-hint, .study-orb-settings label, .study-orb-message, .study-orb-note {
  color: var(--text-dim);
  font-size: .68rem;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: .7px;
}
.study-orb-phase { margin: 0 0 6px; text-transform: uppercase; }
.study-orb-time {
  margin: 0;
  color: var(--text-bold);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.2;
}
.study-orb-date { margin: 4px 0; }
.study-orb-state { margin: 4px 0 0; text-transform: uppercase; letter-spacing: .12em; }
.study-orb-visual-hint { margin: 6px 0 0; font-size: .6rem; }
.study-orb-progress {
  display: block;
  width: min(180px, 55%);
  height: 3px;
  margin: 12px auto;
  border: 0;
  border-radius: 999px;
  appearance: none;
  background: var(--border);
}
.study-orb-progress::-webkit-progress-bar { border-radius: 999px; background: var(--border); }
.study-orb-progress::-webkit-progress-value { border-radius: 999px; background: var(--text-dim); }
.study-orb-progress::-moz-progress-bar { border-radius: 999px; background: var(--text-dim); }
.study-orb-settings label { display: flex; align-items: center; justify-content: center; gap: 8px; margin: 12px 0 4px; }
.study-orb-dialog select, .study-orb-dialog input { color: var(--text-bold); border-color: var(--border); background: var(--panel); font-size: .75rem; }
.study-orb-settings input { width: 80px; }
.study-orb-settings .study-orb-sound input { width: 18px; min-height: 18px; height: 18px; accent-color: var(--text-bold); }
.study-orb-settings .study-orb-sound { min-height: 44px; margin: 0; cursor: pointer; }
.study-orb-settings select { max-width: min(100%, 300px); }
.study-orb-actions { margin-top: 2px; }
.study-orb-actions button { min-width: 76px; }
.study-orb-actions #studyOrbStart { color: var(--text-bold); border-color: var(--border); background: var(--panel); }
.study-orb-message { min-height: 1.5em; margin: 4px 0 0; }
.study-orb-readout.study-orb-swap > * { animation: study-readout-swap .6s cubic-bezier(.22, 1, .36, 1) both; }
@keyframes study-readout-swap { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.study-orb-note { margin: 4px auto 0; max-width: 48ch; font-size: .62rem; }
.study-orb-dialog.study-orb-closing { animation: study-background-out 1.1s cubic-bezier(.4, 0, .2, 1) both; }
.study-orb-closing .study-orb-interface { animation: study-controls-out .35s ease both; }
.study-orb-dialog.study-orb-closing .core-system { animation: study-orb-exit 1.1s cubic-bezier(.65, 0, .35, 1) both !important; }
.study-orb-dialog.study-orb-closing .dial { animation: study-wheel-exit 1.1s cubic-bezier(.65, 0, .35, 1) both; }
@keyframes study-background-in { from { background-color: transparent; } to { background-color: var(--bg-void); } }
@keyframes study-background-out { from { background-color: var(--bg-void); } to { background-color: transparent; } }
@keyframes study-controls-in { 0%, 45% { opacity: 0; transform: translateY(10px); } 100% { opacity: 1; transform: none; } }
@keyframes study-controls-out { to { opacity: 0; transform: translateY(6px); } }
@keyframes study-orb-enter {
  from { transform: translate(var(--study-entry-x, 0px), var(--study-entry-y, 0px)) scale(var(--study-entry-scale, .6)); }
  to { transform: translate(0, 0) scale(1); }
}
@keyframes study-orb-exit {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(var(--study-entry-x, 0px), var(--study-entry-y, 0px)) scale(var(--study-entry-scale, .6)); }
}
@keyframes study-wheel-enter {
  0% { opacity: 1; translate: var(--study-wheel-entry-x, 0px) var(--study-wheel-entry-y, 0px); scale: 1; rotate: 0deg; }
  35% { opacity: .85; }
  90%, 100% { opacity: 0; translate: 0 0; scale: 1.4; rotate: -36deg; }
}
@keyframes study-wheel-exit {
  0%, 12% { opacity: 0; translate: 0 0; scale: 1.4; rotate: -36deg; }
  100% { opacity: 1; translate: var(--study-wheel-entry-x, 0px) var(--study-wheel-entry-y, 0px); scale: 1; rotate: 0deg; }
}
@media (max-width: 600px) {
  .study-orb-interface { padding: 12px 14px 24px; }
  .study-orb-controls { margin-top: max(270px, 37vh); }
  .study-orb-readout { margin-bottom: 10px; }
  .study-orb-tabs button { padding: 8px 7px; font-size: .6rem; letter-spacing: .5px; }
}
@media (prefers-reduced-motion: reduce) {
  .study-orb-dialog, .study-orb-interface, .study-orb-dialog .dial, .study-orb-dialog .core-system, .study-orb-dialog .core-system * { animation: none !important; transition: none !important; }
  .study-orb-dialog .core-mass { transform: scale(1) !important; }
  .study-orb-dialog .dial { opacity: 0; }
  .study-orb-dialog button, .study-orb-dialog .study-orb-dial-value, .study-orb-readout > * { transition: none !important; animation: none !important; }
}