/* Living Time Sphere — living-time-sphere.css */

/* ── CSS custom properties (sphere color palette) ─────────────────── */
:root {
  --sphere-bg:          #0a0a14;
  --sphere-border:      rgba(255, 255, 255, 0.15);
  --sphere-pattern-ring: rgba(255, 255, 255, 0.2);
  --sphere-moon-fill:   rgba(255, 255, 255, 0.04);
  --sphere-moon-active: rgba(220, 160, 80, 0.25);
  --sphere-moon-stroke: rgba(255, 255, 255, 0.15);
  --sphere-passage:     rgba(251, 191, 36, 0.8);
  --sphere-equinox:     rgba(251, 191, 36, 0.9);
  --sphere-yeargate:    rgba(100, 255, 180, 0.9);
  --sphere-lunar:       rgba(180, 180, 255, 0.8);
  --sphere-lunar-ring:  rgba(180, 180, 255, 0.2);
  --sphere-solar:       rgba(255, 220, 80, 0.3);
  --sphere-annual:      rgba(255, 255, 255, 0.5);
  --sphere-selected:    rgba(251, 191, 36, 1);
  --sphere-spiral:      rgba(100, 200, 180, 0.4);
  --sphere-center:      rgba(255, 255, 255, 0.6);
  --sphere-label:       rgba(255, 255, 255, 0.5);
}

/* ── Page layout ─────────────────────────────────────────────────── */
.sphere-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  color: var(--color-text, #e8e4d9);
  font-family: var(--font-body, system-ui, sans-serif);
}

/* ── Hero ────────────────────────────────────────────────────────── */
.sphere-hero {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 2rem;
}

.sphere-hero-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  color: var(--color-accent, #fbbf24);
}

.sphere-hero-description {
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.7;
  color: rgba(232, 228, 217, 0.8);
  font-size: 1rem;
}

/* ── View mode controls ───────────────────────────────────────────── */
.sphere-mode-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.sphere-mode-btn {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.375rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text, #e8e4d9);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.sphere-mode-btn[aria-pressed="true"],
.sphere-mode-btn.active {
  background: rgba(251, 191, 36, 0.15);
  border-color: rgba(251, 191, 36, 0.5);
  color: #fbbf24;
}

.sphere-mode-btn:hover { background: rgba(255, 255, 255, 0.1); }
.sphere-mode-btn:focus-visible {
  outline: 2px solid var(--color-accent, #fbbf24);
  outline-offset: 2px;
}

/* ── Sphere container ─────────────────────────────────────────────── */
.sphere-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  align-items: stretch;
}

@media (min-width: 640px) {
  .sphere-wrapper { flex-direction: row; align-items: flex-start; }
}

#sphere-container {
  flex: 1 1 300px;
  min-width: 0;
  width: min(100%, 560px);
  min-height: 360px;
  height: clamp(360px, 70vw, 520px);
  max-height: 520px;
  width: 100%;
  margin-inline: auto;
  position: relative;
  background: var(--sphere-bg);
  border-radius: 1.2rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

/* Allow page scroll on non-sphere areas */
.sphere-sidebar {
  flex: 0 0 220px;
  min-width: 0;
}

@media (min-width: 900px) {
  .sphere-sidebar {
    flex: 0 0 300px;
  }
}

.sphere-sidebar-section {
  margin-bottom: 1.25rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 0.5rem;
}

.sphere-sidebar-heading {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(232, 228, 217, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.75rem;
}

/* ── SVG sphere styles ────────────────────────────────────────────── */
.living-time-sphere-svg {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  border-radius: 50%;
  /* Scope touch-action to the SVG itself so page scroll still works
     when the user touches outside the sphere container. */
  touch-action: none;
}

.living-time-sphere-svg:active { cursor: grabbing; }

/* ── Canvas fallback ──────────────────────────────────────────────── */
.living-time-sphere-canvas {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 50%;
  cursor: grab;
}

/* ── Details panel ───────────────────────────────────────────────── */
.sphere-details {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 0.5rem;
  margin-bottom: 1.25rem;
}

.sphere-details-heading {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-accent, #fbbf24);
  margin: 0 0 0.75rem;
}

.sphere-details-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 0.2rem 0.75rem;
}

.sphere-details-section + .sphere-details-section {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sphere-details-subheading {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(251, 191, 36, 0.82);
}

.sphere-details-grid dt {
  font-size: 0.8rem;
  color: rgba(232, 228, 217, 0.5);
  padding: 0.2rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.sphere-details-grid dd {
  font-size: 0.875rem;
  margin: 0;
  padding: 0.2rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.sphere-details-grid-tight dt,
.sphere-details-grid-tight dd {
  border-bottom: 0;
}

.sphere-field-range-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.85rem;
}

.sphere-chip-btn,
.sphere-field-summary-pill,
.sphere-status-chip,
.sphere-availability-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  border-radius: 999px;
  font-size: 0.72rem;
  line-height: 1;
  padding: 0.4rem 0.7rem;
}

.sphere-chip-btn {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text, #e8e4d9);
  cursor: pointer;
}

.sphere-chip-btn[aria-pressed="true"] {
  border-color: rgba(251, 191, 36, 0.55);
  background: rgba(251, 191, 36, 0.16);
  color: #fbbf24;
}

.sphere-field-summary {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 0.85rem;
}

.sphere-field-summary-label,
.sphere-field-range-note,
.sphere-field-note {
  margin: 0;
  font-size: 0.82rem;
  color: rgba(232, 228, 217, 0.68);
}

.sphere-field-summary-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.45rem;
}

.sphere-field-summary-pill,
.sphere-availability-chip {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: rgba(232, 228, 217, 0.88);
}

.sphere-actions-compact {
  margin-top: 0;
}

.sphere-field-cards {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.8rem;
}

.sphere-field-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.75rem;
  padding: 0.85rem;
  background: rgba(255, 255, 255, 0.03);
}

.sphere-field-card.is-core {
  border-color: rgba(251, 191, 36, 0.18);
}

.sphere-field-card.is-conditional {
  border-color: rgba(122, 243, 255, 0.14);
}

.sphere-field-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.7rem;
}

.sphere-field-title {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text, #e8e4d9);
}

.sphere-field-value {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: rgba(232, 228, 217, 0.9);
}

.sphere-field-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.sphere-status-chip {
  border: 1px solid transparent;
  color: #05070d;
  font-weight: 600;
}

.sphere-status-live { background: rgba(116, 244, 180, 0.92); }
.sphere-status-calculated { background: rgba(251, 191, 36, 0.92); }
.sphere-status-cached { background: rgba(129, 198, 255, 0.92); }
.sphere-status-user-logged { background: rgba(211, 170, 255, 0.92); }
.sphere-status-unavailable { background: rgba(255, 143, 143, 0.92); }
.sphere-status-not-checked { background: rgba(201, 201, 201, 0.92); }

.sphere-field-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 0.8rem;
  margin-top: 0.8rem;
}

.sphere-field-meta div {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
}

.sphere-field-meta span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: rgba(232, 228, 217, 0.52);
}

.sphere-field-meta strong {
  font-size: 0.84rem;
  color: rgba(232, 228, 217, 0.9);
  font-weight: 500;
}

.sphere-field-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.sphere-field-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.84rem;
  color: #fbbf24;
  text-decoration: none;
}

.sphere-field-details,
.sphere-field-disclosure {
  margin-top: 0.75rem;
}

.sphere-inline-list {
  margin: 0.4rem 0 0;
  padding-left: 1.15rem;
  color: rgba(232, 228, 217, 0.84);
}

.sphere-field-footer-actions {
  margin-top: 0.95rem;
}

/* ── Layer controls ───────────────────────────────────────────────── */
.sphere-layers {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sphere-layer-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.sphere-layer-row input[type="checkbox"] {
  accent-color: var(--color-accent, #fbbf24);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

/* ── Year / range controls ────────────────────────────────────────── */
.sphere-year-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.sphere-year-controls select {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0.375rem;
  color: var(--color-text, #e8e4d9);
  padding: 0.375rem 0.75rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.sphere-year-controls label {
  font-size: 0.875rem;
  color: rgba(232, 228, 217, 0.7);
}

/* ── Accessible text model ────────────────────────────────────────── */
.sphere-text-model {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(232, 228, 217, 0.75);
  white-space: pre-wrap;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0.5rem;
  margin-bottom: 1.25rem;
}

/* ── Visually hidden (screen-reader only) ─────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Action buttons ───────────────────────────────────────────────── */
.sphere-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.sphere-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 0.375rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text, #e8e4d9);
  cursor: pointer;
  transition: background 0.15s;
}

.sphere-btn:hover { background: rgba(255, 255, 255, 0.1); }
.sphere-btn:focus-visible {
  outline: 2px solid var(--color-accent, #fbbf24);
  outline-offset: 2px;
}

.sphere-btn:disabled,
.sphere-chip-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 640px) {
  .sphere-details-grid,
  .sphere-field-meta {
    grid-template-columns: 1fr;
  }

  .sphere-field-card {
    padding: 0.8rem;
  }
}

.sphere-btn-primary {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.4);
  color: #fbbf24;
}

/* ── Methods / coordinate explanation ────────────────────────────── */
.sphere-methods {
  font-size: 0.875rem;
  color: rgba(232, 228, 217, 0.65);
  line-height: 1.7;
}

.sphere-coordinate-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.sphere-coordinate-table th {
  text-align: left;
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  color: rgba(232, 228, 217, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sphere-coordinate-table td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* ── Compact sphere card (used in 13 Moons) ──────────────────────── */
.sphere-compact-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.5rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sphere-compact-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent, #fbbf24);
  margin: 0;
}

.sphere-compact-preview {
  width: 100%;
  aspect-ratio: 1;
  max-width: 160px;
  background: var(--sphere-bg);
  border-radius: 50%;
  margin: 0 auto;
  overflow: visible;
}

.sphere-compact-open {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--color-accent, #fbbf24);
  text-decoration: none;
  border-bottom: 1px solid rgba(251, 191, 36, 0.3);
  align-self: flex-start;
}

.sphere-compact-open:hover { border-bottom-color: rgba(251, 191, 36, 0.7); }

/* ── Error state ──────────────────────────────────────────────────── */
.sphere-error {
  color: rgba(248, 113, 113, 0.9);
  font-size: 0.875rem;
  padding: 0.5rem;
}

/* ── Reduced motion ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .living-time-sphere-svg,
  .living-time-sphere-canvas { cursor: default; }
}

/* ── High contrast ───────────────────────────────────────────────── */
@media (forced-colors: active) {
  .sphere-btn, .sphere-mode-btn { border: 2px solid ButtonText; }
  .sphere-hero-title { color: Highlight; }
  .sphere-details-heading { color: Highlight; }
}

/* ── Narrow viewport (mobile-first overrides) ─────────────────────── */
@media (max-width: 480px) {
  .sphere-details-grid { grid-template-columns: 1fr; }
  #sphere-container { max-width: 100%; border-radius: 0.5rem; }
  .sphere-mode-controls { gap: 0.35rem; }
  .sphere-mode-btn { padding: 0.4rem 0.7rem; font-size: 0.8rem; }
}

/* ── Phase 03: 3D canvas and controls ───────────────────────────── */

.sphere-controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.sphere-renderer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.sphere-control-label {
  font-size: 0.8rem;
  color: rgba(232, 228, 217, 0.6);
  white-space: nowrap;
}

.sphere-control-select {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0.375rem;
  color: var(--color-text, #e8e4d9);
  font-size: 0.8rem;
  padding: 0.3rem 0.5rem;
  cursor: pointer;
}

.sphere-3d-preview-note {
  font-size: 0.72rem;
  color: rgba(251, 191, 36, 0.6);
  margin: 0;
  align-self: center;
}

/* Canvas wrapper with mobile interact overlay */
.sphere-canvas-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1 1 320px;
  min-width: 0;
  max-width: 100%;
  order: 1;
}

.sphere-interact-bar {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.35rem;
  text-align: center;
}

@media (max-width: 480px) {
  .sphere-interact-bar { display: flex; }
}

.sphere-interact-toggle {
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 0.375rem;
  border: 1px solid rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.1);
  color: #fbbf24;
  cursor: pointer;
}

.sphere-interact-end {
  border-color: rgba(248, 113, 113, 0.4);
  background: rgba(248, 113, 113, 0.08);
  color: rgba(248, 113, 113, 0.9);
}

/* 3D canvas */
.living-time-sphere-3d-canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 0.5rem;
  cursor: grab;
  touch-action: pan-y; /* default: vertical scroll preserved */
}

.living-time-sphere-3d-canvas:active { cursor: grabbing; }

/* Camera control buttons (shown in 3D mode) */
.sphere-camera-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
  justify-content: center;
}

.sphere-cam-label {
  font-size: 0.68rem;
  color: var(--fg-3, #8892a8);
  align-self: center;
  white-space: nowrap;
}

.sphere-cam-btn {
  padding: 0.3rem 0.6rem;
  font-size: 0.72rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(232, 228, 217, 0.7);
  cursor: pointer;
  transition: background 0.15s;
}

.sphere-cam-btn:hover { background: rgba(255, 255, 255, 0.1); }

/* Alternate views (table / text) */
.sphere-alt-view {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.5rem;
  padding: 1rem;
  flex: 1 1 300px;
}

/* ── SVG view-mode emphasis ───────────────────────────────────────── */
/* Each mode highlights its primary layer; secondary layers are dimmed. */

/* Passage mode: brighten the arc; dim other astronomical overlays. */
.sphere-mode-passage .sphere-passage-arc {
  stroke: rgba(251, 191, 36, 1);
  stroke-width: 5;
  filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.6));
}
.sphere-mode-passage .sphere-lunar-orbit-ring,
.sphere-mode-passage .sphere-lunar-marker,
.sphere-mode-passage .sphere-solar-axis,
.sphere-mode-passage .sphere-spiral-path,
.sphere-mode-passage .sphere-annual-marker { opacity: 0.25; }

/* Years mode: highlight the spiral and annual markers. */
.sphere-mode-years .sphere-spiral-path {
  stroke: rgba(100, 200, 180, 0.9);
  stroke-width: 2.5;
}
.sphere-mode-years .sphere-annual-marker {
  opacity: 1;
}
.sphere-mode-years .sphere-annual-selected {
  filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.7));
}
.sphere-mode-years .sphere-lunar-orbit-ring,
.sphere-mode-years .sphere-lunar-marker,
.sphere-mode-years .sphere-solar-axis,
.sphere-mode-years .sphere-passage-arc { opacity: 0.2; }

/* Pattern mode: show only the calendar structure; hide astronomical data. */
.sphere-mode-pattern .sphere-passage-arc,
.sphere-mode-pattern .sphere-lunar-orbit-ring,
.sphere-mode-pattern .sphere-lunar-marker,
.sphere-mode-pattern .sphere-solar-axis,
.sphere-mode-pattern .sphere-annual-marker,
.sphere-mode-pattern .sphere-spiral-path { display: none; }
.sphere-mode-pattern .sphere-moon-sector { opacity: 0.6; }
.sphere-mode-pattern .sphere-pattern-ring { stroke: rgba(255, 255, 255, 0.4); stroke-width: 3; }

/* ── Guided introduction ──────────────────────────────────────────── */

.sphere-intro {
  position: absolute;
  top: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  width: min(calc(100% - 1rem), 29rem);
  background: rgba(10, 12, 25, 0.92);
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-radius: 0.5rem;
  padding: 1.25rem 1.25rem 1rem;
  margin: 0;
  backdrop-filter: blur(4px);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
}

.sphere-intro-step {
  font-size: 0.72rem;
  color: rgba(251, 191, 36, 0.6);
  margin: 0 0 0.35rem;
}

.sphere-intro-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fbbf24;
  margin: 0 0 0.5rem;
}

.sphere-intro-body {
  font-size: 0.875rem;
  color: rgba(232, 228, 217, 0.85);
  line-height: 1.6;
  margin: 0 0 1rem;
}

.sphere-intro-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* ── Today card (moons.html Today tab) ──────────────────────────── */

.sphere-today-card {
  background: rgba(10, 10, 20, 0.7);
  border: 1px solid rgba(251, 191, 36, 0.15);
  border-radius: 0.5rem;
  padding: 1.25rem;
}

.sphere-today-layout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 0.75rem;
}

.sphere-today-preview {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  background: var(--sphere-bg, #0a0a14);
  border-radius: 50%;
  overflow: hidden;
}

@media (max-width: 480px) {
  .sphere-today-layout { flex-direction: column; }
  .sphere-today-preview { width: 80px; height: 80px; }
}

.sphere-today-data { flex: 1; min-width: 0; }

.sphere-today-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.75rem;
  font-size: 0.82rem;
  margin: 0 0 0.6rem;
}

.sphere-today-grid dt {
  color: rgba(232, 228, 217, 0.5);
  white-space: nowrap;
}

.sphere-today-grid dd {
  color: var(--color-text, #e8e4d9);
  margin: 0;
  font-weight: 500;
}

.sphere-today-orientation {
  font-size: 0.82rem;
  color: rgba(232, 228, 217, 0.6);
  margin: 0 0 0.75rem;
  line-height: 1.5;
}

.sphere-today-accessible-wrap {
  margin-top: 0.5rem;
  font-size: 0.78rem;
}

.sphere-today-accessible-toggle {
  color: rgba(232, 228, 217, 0.45);
  cursor: pointer;
}

.sphere-today-accessible {
  font-size: 0.75rem;
  line-height: 1.6;
  white-space: pre-wrap;
  color: rgba(232, 228, 217, 0.5);
  margin: 0.4rem 0 0;
}

/* ── Homepage observatory section ────────────────────────────────── */

.sphere-observatory-section {
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.8) 0%, rgba(10, 10, 20, 0.6) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 2rem 0;
}

.sphere-observatory-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
}

.sphere-observatory-header {
  margin-bottom: 1.25rem;
}

.sphere-observatory-toolbar {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.sphere-observatory-mode-group,
.sphere-observatory-layer-group,
.sphere-observatory-year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.sphere-chip-btn {
  border: 1px solid rgba(251, 191, 36, 0.22);
  background: rgba(17, 24, 39, 0.72);
  color: rgba(245, 238, 224, 0.92);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font: inherit;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.sphere-chip-btn[aria-pressed="true"] {
  background: rgba(251, 191, 36, 0.18);
  border-color: rgba(251, 191, 36, 0.55);
}

.sphere-chip-btn:hover,
.sphere-chip-btn:focus-visible {
  border-color: rgba(251, 191, 36, 0.7);
  transform: translateY(-1px);
}

.sphere-chip-btn--year {
  min-width: 2.5rem;
  padding-inline: 0;
}

.sphere-observatory-year-label {
  min-width: 4rem;
  text-align: center;
  color: rgba(232, 228, 217, 0.68);
  font-size: 0.88rem;
}

.sphere-observatory-desc {
  font-size: 0.9rem;
  color: rgba(232, 228, 217, 0.55);
  margin: 0.35rem 0 0;
  line-height: 1.6;
}

.sphere-observatory-layout {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.sphere-observatory-preview-wrap {
  flex-shrink: 0;
  width: min(320px, 100%);
}

.sphere-observatory-preview {
  width: min(320px, 100%);
  aspect-ratio: 1;
  background: var(--sphere-bg, #0a0a14);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.sphere-observatory-preview--interactive {
  min-height: 260px;
}

.sphere-observatory-mode-summary {
  margin: 0.75rem 0 0;
  font-size: 0.84rem;
  color: rgba(232, 228, 217, 0.68);
}

@media (max-width: 600px) {
  .sphere-observatory-layout { flex-direction: column; align-items: center; }
  .sphere-observatory-preview-wrap { width: 100%; }
  .sphere-observatory-preview { width: 100%; }
  .sphere-observatory-preview--interactive { min-height: 220px; }
}

.sphere-observatory-data {
  flex: 1;
  min-width: 0;
}

.sphere-observatory-notes {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.sphere-observatory-notes li {
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.8rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 10, 20, 0.42);
  color: rgba(232, 228, 217, 0.74);
  font-size: 0.82rem;
}

.sphere-observatory-notes strong {
  color: rgba(251, 191, 36, 0.85);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sphere-observatory-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Prevent 3D from loading on homepage (guard class; set by JS if 3D attempted) */
.sphere-no-3d .living-time-sphere-3d-canvas { display: none !important; }

/* ── Phase 03 bug-fix additions ──────────────────────────────────── */

/* Sphere Settings collapsible group */
.sphere-settings-group {
  margin-top: 0.5rem;
}

.sphere-settings-summary {
  cursor: pointer;
  font-size: 0.82rem;
  color: rgba(232, 228, 217, 0.55);
  padding: 0.25rem 0;
  user-select: none;
  list-style: none;
}
.sphere-settings-summary::-webkit-details-marker { display: none; }
.sphere-settings-summary::before { content: "▸ "; }
details[open] > .sphere-settings-summary::before { content: "▾ "; }

.sphere-settings-body {
  padding: 0.5rem 0 0;
}

/* On larger screens, keep settings expanded and hide summary text */
@media (min-width: 640px) {
  .sphere-settings-group[open] .sphere-settings-summary { display: none; }
  .sphere-settings-group { display: contents; }
}

/* Fallback warning banner */
.sphere-fallback-warning {
  background: rgba(180, 60, 20, 0.18);
  border: 1px solid rgba(220, 100, 40, 0.45);
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  margin-top: 0.5rem;
  font-size: 0.83rem;
  color: rgba(255, 200, 160, 0.9);
  overflow-x: hidden;
}

.sphere-fallback-summary {
  font-weight: 600;
  margin: 0 0 0.25rem;
  font-size: 0.87rem;
}

.sphere-fallback-reason {
  display: block;
  margin-bottom: 0.4rem;
  overflow-wrap: break-word;
  word-break: break-word;
}

.sphere-fallback-details {
  margin: 0.4rem 0;
  font-size: 0.8rem;
}

.sphere-fallback-details summary {
  cursor: pointer;
  color: rgba(255, 200, 160, 0.7);
  padding: 0.15rem 0;
  list-style: none;
}
.sphere-fallback-details summary::-webkit-details-marker { display: none; }

.sphere-fallback-detail-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.2rem 0.7rem;
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
}

.sphere-fallback-detail-list dt {
  font-weight: 600;
  white-space: nowrap;
}

.sphere-fallback-wrap {
  overflow-wrap: break-word;
  word-break: break-word;
}

.sphere-fallback-actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

@media (min-width: 420px) {
  .sphere-fallback-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

.sphere-btn-sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
}

.sphere-current-status {
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(244, 239, 223, 0.92);
  text-align: center;
  margin: 0.2rem auto 0.65rem;
  padding: 0.7rem 0.95rem;
  max-width: 560px;
  border-radius: 0.9rem;
  background: linear-gradient(180deg, rgba(20, 26, 44, 0.88), rgba(8, 12, 24, 0.74));
  border: 1px solid rgba(251, 191, 36, 0.2);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
}

/* Diagnostics sections */
.sphere-diagnostics-section {
  margin: 1.5rem 0;
}

.sphere-diag-summary {
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(232, 228, 217, 0.5);
  padding: 0.3rem 0;
  list-style: none;
  user-select: none;
}
.sphere-diag-summary::-webkit-details-marker { display: none; }
.sphere-diag-summary::before { content: "▸ "; }
details[open] > .sphere-diag-summary::before { content: "▾ "; }

.sphere-diag-grid {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.2rem 1rem;
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
}

.sphere-diag-grid dt {
  color: rgba(232, 228, 217, 0.45);
  white-space: nowrap;
  margin: 0;
}

.sphere-diag-grid dd {
  color: rgba(232, 228, 217, 0.8);
  margin: 0;
  font-family: monospace;
  word-break: break-word;
}

/* ── Mode summary ─────────────────────────────────────────────── */
.sphere-mode-summary {
  font-size: 0.875rem;
  color: var(--fg-2, #b0b8cc);
  padding: 0.25rem 0.5rem;
  text-align: center;
  min-height: 1.5em;
}

/* ── "What am I seeing?" ──────────────────────────────────────── */
.sphere-what-am-i-seeing {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  margin: 0.5rem 0;
  padding: 0 0.75rem;
}
.sphere-what-summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--fg-2, #b0b8cc);
  padding: 0.5rem 0;
  list-style: none;
}
.sphere-what-summary::marker,
.sphere-what-summary::-webkit-details-marker { display: none; }
.sphere-what-summary::before { content: "▶ "; }
details[open] .sphere-what-summary::before { content: "▼ "; }
.sphere-what-body {
  font-size: 0.82rem;
  color: var(--fg-3, #8892a8);
  line-height: 1.5;
  margin: 0 0 0.5rem;
}

/* ── Interaction hint ─────────────────────────────────────────── */
.sphere-interact-hint {
  font-size: 0.72rem;
  color: var(--fg-3, #8892a8);
  margin: 0.1rem 0 0;
  text-align: center;
  line-height: 1.3;
}

/* ── Compact legend ───────────────────────────────────────────── */
.sphere-legend {
  background: rgba(5,7,13,0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  margin: 0.5rem 0;
  font-size: 0.8rem;
}
.sphere-legend-heading {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fg-1, #d0d8e8);
  margin: 0 0 0.4rem;
}
.sphere-legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
}
.sphere-legend-row {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--fg-2, #b0b8cc);
  white-space: nowrap;
}
.sphere-legend-rows {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.sphere-legend-row-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.6rem;
}
.sphere-legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--fg-2, #b0b8cc);
  white-space: nowrap;
  font-size: 0.78rem;
}
.sphere-legend-symbol {
  font-size: 0.9rem;
  line-height: 1;
  width: 1.2em;
  text-align: center;
}
.legend-today    { color: #ffd700; }
.legend-equinox  { color: #fbbf24; }
.legend-yeargate { color: #64ffb4; }
.legend-lunar    { color: #b4b4ff; }
.legend-passage  { color: #ffd060; letter-spacing: -0.05em; }
.legend-year     { color: #88aacc; }
.legend-pattern  { color: #334466; }
.legend-spiral   { color: #64c8b4; }
.legend-solar    { color: #ffdc50; }
.sphere-legend-expand > summary {
  font-size: 0.78rem;
  color: var(--fg-3, #8892a8);
  cursor: pointer;
  padding: 0.35rem 0 0.1rem;
}

/* ── Current-state strip ─────────────────────────────────────── */
.sphere-state-strip {
  width: min(100%, 560px);
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(232, 238, 244, 0.9);
  text-align: center;
  padding: 0.42rem 0.8rem;
  margin: 0 0 0.45rem;
  letter-spacing: 0.03em;
  min-height: 1.5em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: linear-gradient(180deg, rgba(14, 18, 34, 0.84), rgba(8, 12, 24, 0.62));
  border: 1px solid rgba(100, 200, 180, 0.16);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.sphere-detail-nav,
.sphere-detail-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
}

.sphere-detail-nav {
  margin: 0 0 0.8rem;
}

.sphere-detail-actions {
  margin-top: 0.9rem;
}

.sphere-detail-nav .sphere-btn,
.sphere-detail-actions .sphere-btn {
  justify-content: center;
}

.sphere-field-note {
  font-size: 0.78rem;
  line-height: 1.5;
  color: rgba(232, 228, 217, 0.62);
  margin: 0.5rem 0 0;
}

.sphere-inline-note {
  display: inline-block;
  font-size: 0.72rem;
  color: rgba(232, 228, 217, 0.54);
}

/* ── Floating tap label ──────────────────────────────────────── */
.sphere-floating-label {
  background: rgba(5,7,13,0.92);
  border: 1px solid rgba(255,215,0,0.5);
  border-radius: 6px;
  color: #e8eaf0;
  font-size: 0.78rem;
  line-height: 1.45;
  padding: 0.35rem 0.6rem;
  pointer-events: none;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
  max-width: 200px;
  white-space: pre-wrap;
}

.sphere-day-guide,
.sphere-connection-line {
  pointer-events: none;
}

.sphere-active-day-number.is-selected,
.sphere-day-label {
  font-weight: 700;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.9);
}

.sphere-connection-line.is-selected {
  filter: drop-shadow(0 0 8px rgba(251, 191, 36, 0.36));
}

/* ── Moon labels overlay (sphere-anchored via JS projection) ─── */
.sphere-moon-labels {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  overflow: hidden;
}
.sphere-moon-label-connector {
  position: absolute;
  height: 1px;
  transform-origin: 0 50%;
  background: linear-gradient(90deg, rgba(251, 191, 36, 0.68), rgba(251, 191, 36, 0));
  opacity: 0;
  transition: opacity 0.18s ease;
}
.sphere-moon-label {
  position: absolute;
  font-size: 0.65rem;
  color: rgba(186, 225, 216, 0.92);
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1.1;
  text-shadow: 0 1px 4px rgba(0,0,0,0.92);
  transition: opacity 0.18s ease, transform 0.18s ease;
  white-space: nowrap;
  padding: 0.16rem 0.42rem;
  border-radius: 999px;
  background: rgba(6, 10, 20, 0.62);
  border: 1px solid rgba(100, 200, 180, 0.18);
  backdrop-filter: blur(4px);
}
.sphere-moon-label.is-quiet {
  background: rgba(6, 10, 20, 0.48);
  border-color: rgba(100, 200, 180, 0.12);
}
.sphere-moon-label.is-selected {
  color: #fff1c2;
  background: rgba(52, 36, 10, 0.82);
  border-color: rgba(251, 191, 36, 0.45);
  box-shadow: 0 0 0 1px rgba(251, 191, 36, 0.12), 0 8px 16px rgba(0, 0, 0, 0.24);
}
.sphere-moon-label.is-front {
  text-shadow: 0 1px 4px rgba(0,0,0,0.96), 0 0 12px rgba(100,200,180,0.12);
}

/* ── Pattern Core note ───────────────────────────────────────── */
.sphere-core-note {
  font-size: 0.78rem;
  color: var(--fg-3, #8892a8);
  margin-top: 0.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 0.4rem;
}

@media (max-width: 899px) {
  .sphere-wrapper {
    display: grid;
    grid-template-columns: 1fr;
  }

  .sphere-canvas-wrap {
    order: 1;
  }

  .sphere-legend {
    order: 3;
  }

  .sphere-sidebar {
    order: 2;
  }
}

@media (max-width: 640px) {
  .sphere-page {
    padding-inline: 0.8rem;
  }

  .sphere-mode-controls {
    justify-content: center;
  }

  .sphere-current-status,
  .sphere-state-strip {
    white-space: normal;
    line-height: 1.45;
    border-radius: 1rem;
  }

  .sphere-camera-controls {
    width: 100%;
  }

  .sphere-camera-controls .sphere-cam-label {
    width: 100%;
    text-align: center;
  }

  .sphere-camera-controls .sphere-cam-btn {
    flex: 1 1 calc(50% - 0.35rem);
    justify-content: center;
  }

  .sphere-details-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

  .sphere-detail-nav,
  .sphere-detail-actions {
    grid-template-columns: 1fr;
  }

  .sphere-legend {
    margin-top: 0.1rem;
  }
}