/* GitHub authentication presentation.
 *
 * Anonymous visitors see the existing public 0x0sky graph as a locked preview.
 * The graph remains visible but cannot be manipulated until authentication.
 * Signed-in identity lives in the footer and sign-out requires confirmation.
 */

.topbar .session-control {
  display: none;
}

.topbar .session-control--authenticated {
  position: relative;
  display: inline-flex;
  min-height: 2.7rem;
  padding: 0.72rem 2rem 0.68rem 0.95rem;
  align-items: center;
  border-color: color-mix(in srgb, var(--accent), transparent 58%);
  color: color-mix(in srgb, var(--accent), white 68%);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent), transparent 89%), transparent 62%),
    rgba(5, 8, 17, 0.66);
  box-shadow:
    inset 0 0 1.5rem color-mix(in srgb, var(--accent), transparent 94%),
    0 0 1.8rem color-mix(in srgb, var(--accent), transparent 94%);
  text-decoration: none;
}

.topbar .session-control--authenticated:hover,
.topbar .session-control--authenticated:focus-visible {
  border-color: color-mix(in srgb, var(--accent), transparent 32%);
  color: color-mix(in srgb, var(--accent), white 84%);
  outline: none;
}

.session-control__external {
  position: absolute;
  top: 0.24rem;
  right: 0.48rem;
  color: color-mix(in srgb, var(--accent), white 34%);
  font-size: 0.62rem;
  line-height: 1;
}

.fork-switcher__organization:not([hidden]) {
  display: grid;
  gap: 0.12rem;
  line-height: 1.05;
}

.fork-switcher__organization:not([hidden])::after {
  content: attr(data-organization);
  color: color-mix(in srgb, currentColor, transparent 38%);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.025em;
}

.renderer-surface[data-auth-locked="true"] {
  isolation: isolate;
  cursor: default;
}

.renderer-surface[data-auth-locked="true"] > :not(.auth-graph-gate) {
  pointer-events: none !important;
  user-select: none;
}

.renderer-surface[data-auth-locked="true"] .render-controls,
.renderer-surface[data-auth-locked="true"] .graph-toast {
  visibility: hidden;
}

.graph-section[data-auth-locked="true"] .graph-status button,
.graph-section[data-auth-locked="true"] .node-details,
.graph-section[data-auth-locked="true"] .accessible-graph {
  pointer-events: none;
  user-select: none;
}

.graph-section[data-auth-locked="true"] .node-details,
.graph-section[data-auth-locked="true"] .accessible-graph {
  opacity: 0.5;
}

/* Runtime owns the angle so pointer interaction can pause the orbit, hold for
 * 500 ms after release and ease the velocity back to cruise. GPU and semantic
 * SVG layers still read one transform and remain visually coincident. */
.renderer-surface[data-auth-locked="true"] .renderer-gpu-canvas,
.renderer-surface[data-auth-locked="true"] .renderer-svg-layer {
  transform-origin: 50% 50%;
  transform: rotate(var(--auth-orbit-angle, 0deg)) scale(1.015);
  opacity: 0.68;
  filter: saturate(0.82) brightness(0.78);
}

.renderer-surface[data-auth-locked="true"]::after {
  content: "";
  position: absolute;
  z-index: 18;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 7rem, rgba(3, 5, 10, 0.12) 14rem, rgba(3, 5, 10, 0.34) 100%),
    linear-gradient(180deg, rgba(3, 5, 10, 0.06), rgba(3, 5, 10, 0.24));
}

.auth-graph-gate {
  position: absolute;
  z-index: 30;
  left: 50%;
  top: 50%;
  display: grid;
  min-width: min(19rem, calc(100% - 2rem));
  padding: 1.15rem 1.25rem 1.25rem;
  place-items: center;
  gap: 0.45rem;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 58%);
  border-radius: 1.25rem;
  background:
    radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--accent), transparent 86%), transparent 62%),
    rgba(5, 8, 13, 0.82);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.025) inset,
    0 1.5rem 5rem rgba(0, 0, 0, 0.44),
    0 0 4rem color-mix(in srgb, var(--accent), transparent 90%);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  text-align: center;
}

.auth-graph-gate__core {
  color: var(--text);
  font-size: clamp(1.25rem, 4vw, 1.65rem);
  font-weight: 680;
  letter-spacing: 0.08em;
  text-shadow: 0 0 1.8rem color-mix(in srgb, var(--accent), transparent 38%);
}

.auth-graph-gate__caption {
  color: var(--muted);
  font: 0.68rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.auth-graph-gate__action {
  display: inline-flex;
  min-height: 2.6rem;
  margin-top: 0.45rem;
  padding: 0.7rem 1rem;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 45%);
  border-radius: 999px;
  color: var(--text);
  background: color-mix(in srgb, var(--accent), transparent 86%);
  font: 0.76rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.auth-graph-gate__action:hover,
.auth-graph-gate__action:focus-visible {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent), transparent 20%);
  background: color-mix(in srgb, var(--accent), transparent 78%);
  outline: none;
}

/* Mind selection.
 *
 * Shown only when there is a decision to make — no selected source, or one that
 * stopped validating. A person whose mind still validates never sees this, so
 * it is styled as the gate's sibling rather than as a notice layered over a
 * working graph.
 */
.mind-picker {
  position: absolute;
  z-index: 31;
  left: 50%;
  top: 50%;
  display: grid;
  min-width: min(23rem, calc(100% - 2rem));
  max-width: min(30rem, calc(100% - 2rem));
  padding: 1.15rem 1.25rem 1.25rem;
  gap: 0.5rem;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 58%);
  border-radius: 1.25rem;
  background:
    radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--accent), transparent 86%), transparent 62%),
    rgba(5, 8, 13, 0.86);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.025) inset,
    0 1.5rem 5rem rgba(0, 0, 0, 0.44),
    0 0 4rem color-mix(in srgb, var(--accent), transparent 90%);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.mind-picker__title {
  color: var(--text);
  font-size: clamp(1rem, 3vw, 1.2rem);
  font-weight: 660;
  letter-spacing: 0.06em;
}

.mind-picker__reason,
.mind-picker__empty,
.mind-picker__status {
  color: var(--muted);
  font: 0.68rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  letter-spacing: 0.05em;
}

.mind-picker__status:empty {
  display: none;
}

.mind-picker__list {
  display: grid;
  margin: 0.25rem 0 0;
  padding: 0;
  gap: 0.4rem;
  list-style: none;
}

.mind-picker__choice {
  display: flex;
  width: 100%;
  min-height: 2.6rem;
  padding: 0.6rem 0.85rem;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 62%);
  border-radius: 0.9rem;
  color: var(--text);
  background: color-mix(in srgb, var(--accent), transparent 90%);
  font: 0.76rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  text-align: left;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.mind-picker__choice:hover,
.mind-picker__choice:focus-visible {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent), transparent 20%);
  background: color-mix(in srgb, var(--accent), transparent 78%);
  outline: none;
}

.mind-picker__choice[aria-current="true"] {
  border-color: color-mix(in srgb, var(--accent), transparent 28%);
}

.mind-picker__create button {
  display: inline-flex;
  min-height: 2.6rem;
  margin-top: 0.35rem;
  padding: 0.7rem 1rem;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 45%);
  border-radius: 999px;
  color: var(--text);
  background: color-mix(in srgb, var(--accent), transparent 86%);
  font: 0.76rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  cursor: pointer;
}

.mind-picker__branch {
  flex: none;
  color: var(--muted);
  font-size: 0.66rem;
}

/* The write changes which repository every later request resolves to, so the
 * whole picker stops accepting clicks for the round trip rather than only the
 * button that was pressed. */
.mind-picker[data-selecting="true"] .mind-picker__choice {
  opacity: 0.5;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .mind-picker__choice {
    transition: none;
  }

  .mind-picker__choice:hover,
  .mind-picker__choice:focus-visible {
    transform: none;
  }
}

.footer-session {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
  color: var(--muted);
  font: 0.7rem ui-monospace, "SFMono-Regular", Menlo, monospace;
  white-space: nowrap;
}

.footer-session button {
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.footer-session button:hover,
.footer-session button:focus-visible {
  color: var(--text);
  outline: none;
}

.footer-session__confirm {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.footer-session__confirm[hidden],
.footer-session__identity[hidden] {
  display: none;
}

.footer-session__confirm form {
  display: inline-flex;
}

.footer-session__confirm button {
  min-width: 1.5rem;
}

@media (max-width: 719px) {
  .auth-graph-gate {
    min-width: min(17rem, calc(100% - 1.5rem));
  }

  .footer-session {
    width: 100%;
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .renderer-surface[data-auth-locked="true"] .renderer-gpu-canvas,
  .renderer-surface[data-auth-locked="true"] .renderer-svg-layer {
    transform: scale(1.015);
  }
}