/* ============================================================
   Sentimind — Constellation Graph Components
   마음의 별자리 (감정 온톨로지 그래프 시각화)
   ============================================================ */

/* ===== 마음의 별자리 (Constellation Graph) — Redesigned ===== */

.constellation-section { position: relative; }

.constellation-loading {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.constellation-message {
  text-align: center;
  font-size: 0.8rem;
  font-family: var(--font-diary);
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
  font-style: italic;
  letter-spacing: 0.02em;
  line-height: var(--leading-relaxed, 1.65);
}

/* ─── 캔버스 배경 (Phase 1) ─── */
.constellation-canvas {
  width: 100%;
  min-height: 450px;
  max-height: 520px;
  border-radius: var(--radius-lg, 12px);
  overflow: hidden;
  position: relative;
  background: linear-gradient(160deg, #F5F0EB 0%, #EBF0EE 40%, #F0EDE8 100%);
}

[data-theme="dark"] .constellation-canvas {
  background: linear-gradient(160deg, #0F0E0D 0%, #141311 40%, #181614 100%);
}

@media (min-width: 768px) {
  .constellation-canvas {
    min-height: 500px;
    max-height: 600px;
  }
}

/* CSS 별 파티클 */
.constellation-canvas::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(194,113,79,0.3) 50%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, rgba(194,113,79,0.2) 50%, transparent 100%),
    radial-gradient(1px 1px at 55% 25%, rgba(194,113,79,0.25) 50%, transparent 100%),
    radial-gradient(1px 1px at 70% 70%, rgba(194,113,79,0.15) 50%, transparent 100%),
    radial-gradient(1px 1px at 85% 40%, rgba(194,113,79,0.2) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 20% 80%, rgba(212,149,110,0.2) 50%, transparent 100%),
    radial-gradient(1px 1px at 45% 45%, rgba(212,149,110,0.15) 50%, transparent 100%),
    radial-gradient(1px 1px at 90% 10%, rgba(168,162,158,0.2) 50%, transparent 100%);
  animation: constellationBgTwinkle 8s ease-in-out infinite alternate;
}

[data-theme="dark"] .constellation-canvas::before {
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(251,146,60,0.25) 50%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, rgba(251,146,60,0.15) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 25%, rgba(253,186,116,0.2) 50%, transparent 100%),
    radial-gradient(1px 1px at 70% 70%, rgba(251,146,60,0.12) 50%, transparent 100%),
    radial-gradient(1px 1px at 85% 40%, rgba(253,186,116,0.15) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 20% 80%, rgba(251,146,60,0.18) 50%, transparent 100%),
    radial-gradient(1px 1px at 45% 45%, rgba(253,186,116,0.1) 50%, transparent 100%),
    radial-gradient(1px 1px at 90% 10%, rgba(168,162,158,0.15) 50%, transparent 100%);
}

@keyframes constellationBgTwinkle {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

@keyframes constellationStarPulse {
  0%, 100% { filter: drop-shadow(0 0 3px currentColor); }
  50% { filter: drop-shadow(0 0 8px currentColor); }
}

@media (prefers-reduced-motion: reduce) {
  .constellation-canvas::before { animation: none; opacity: 0.75; }
}

/* ─── 검색바 (Phase 2) ─── */
.constellation-search {
  margin-bottom: 0.5rem;
}

.constellation-search-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm, 6px);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-xs, 0.75rem);
  outline: none;
  transition: border-color 0.15s ease;
  box-sizing: border-box;
}

.constellation-search-input:focus {
  border-color: var(--color-primary);
}

.constellation-search-input::placeholder {
  color: var(--color-text-muted);
}

/* ─── 필터 칩 (Phase 3) ─── */
.constellation-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 0.5rem;
}

.constellation-filter-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.constellation-filter-label {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 2px;
}

.constellation-filter-chip {
  font-family: var(--font-body);
  font-size: 0.7rem;
  padding: 3px 10px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-surface);
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.15s ease;
}

.constellation-filter-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.constellation-filter-chip.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ─── 범례 (Phase 1) ─── */
.constellation-legend {
  position: absolute;
  bottom: 12px;
  left: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  align-items: center;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 6px 10px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--color-border);
  font-size: 0.65rem;
  color: var(--color-text-light);
  max-width: 280px;
  z-index: 5;
  pointer-events: auto;
}

[data-theme="dark"] .constellation-legend {
  background: rgba(20,18,17,0.85);
  border-color: rgba(41,37,36,0.8);
}

.constellation-legend-title {
  font-weight: 600;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  width: 100%;
}

.constellation-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.constellation-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .constellation-legend {
    max-width: 220px;
    font-size: 0.6rem;
  }
}

/* ─── 줌 컨트롤 (Phase 2) ─── */
.constellation-zoom {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 5;
}

.constellation-zoom-btn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm, 6px);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-text);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
  padding: 0;
  line-height: 1;
}

[data-theme="dark"] .constellation-zoom-btn {
  background: rgba(20,18,17,0.85);
  border-color: rgba(41,37,36,0.8);
}

.constellation-zoom-btn:hover {
  background: var(--color-surface-warm, var(--color-surface-hover));
}

/* ─── 통계 오버레이 (Phase 3) ─── */
.constellation-stats-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 8px 10px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--color-border);
  font-size: 0.65rem;
  color: var(--color-text-light);
  max-width: 180px;
  z-index: 5;
}

[data-theme="dark"] .constellation-stats-overlay {
  background: rgba(20,18,17,0.85);
  border-color: rgba(41,37,36,0.8);
}

.constellation-stats-title {
  font-weight: 600;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.constellation-stats-item {
  line-height: 1.4;
}

.constellation-stats-item em {
  font-style: normal;
  color: var(--color-primary);
  font-weight: 500;
}

@media (max-width: 480px) {
  .constellation-stats-overlay {
    display: none;
  }
}

/* ─── 디테일 패널 (Phase 2) ─── */
.constellation-detail {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 12px) var(--radius-lg, 12px) 0 0;
  padding: 1rem 1.25rem;
  position: relative;
  margin-top: -1px;
  transform: translateY(100%);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: transform 300ms ease, max-height 300ms ease, opacity 200ms ease;
}

.constellation-detail--open {
  transform: translateY(0);
  max-height: 200px;
  opacity: 1;
}

.constellation-detail-close {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.constellation-detail-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 0.5rem;
}

.constellation-detail-emoji {
  font-size: 1.5rem;
}

.constellation-detail-name {
  font-weight: 600;
  font-size: var(--text-base, 1rem);
  color: var(--color-text);
}

.constellation-detail-count {
  display: block;
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-text-muted);
}

.constellation-detail-dates {
  display: flex;
  gap: 12px;
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.constellation-detail-conn-label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.constellation-detail-connections {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.constellation-detail-conn-tag {
  font-size: var(--text-xs, 0.75rem);
  padding: 2px 8px;
  border: 1px solid;
  border-radius: var(--radius-sm, 6px);
  color: var(--color-text-light);
  background: var(--color-surface-warm, var(--color-surface-hover));
}

/* ─── 빈 상태 (Phase 1 강화) ─── */
.constellation-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--color-text-muted);
}

.constellation-empty--enhanced {
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg, 12px);
  overflow: hidden;
}

.constellation-empty-sky {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #F5F0EB 0%, #EBF0EE 100%);
  z-index: 0;
}

[data-theme="dark"] .constellation-empty-sky {
  background: linear-gradient(160deg, #0F0E0D 0%, #141311 100%);
}

.constellation-empty-stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 20% 30%, rgba(194,113,79,0.3) 50%, transparent 100%),
    radial-gradient(1px 1px at 50% 50%, rgba(194,113,79,0.2) 50%, transparent 100%),
    radial-gradient(1px 1px at 80% 20%, rgba(194,113,79,0.25) 50%, transparent 100%);
  animation: constellationBgTwinkle 6s ease-in-out infinite alternate;
}

.constellation-empty--enhanced .constellation-empty-icon,
.constellation-empty--enhanced .constellation-empty-text,
.constellation-empty--enhanced .constellation-empty-sub {
  position: relative;
  z-index: 1;
}

.constellation-empty-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.constellation-empty--enhanced .constellation-empty-icon {
  animation: constellationStarPulse 3s ease-in-out infinite;
}
.constellation-empty-text { font-size: 0.9rem; margin-bottom: 0.25rem; }
.constellation-empty-sub { font-size: 0.75rem; opacity: 0.7; }

@media (prefers-reduced-motion: reduce) {
  .constellation-empty-stars { animation: none; }
  .constellation-empty--enhanced .constellation-empty-icon { animation: none; }
}

/* ─── 별자리 정보 패널 (기존 유지) ─── */
.constellation-info {
  margin-top: 1rem;
}
.constellation-info-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.constellation-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
}
.constellation-card--complete {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
}
.constellation-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}
.constellation-card-name {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}
.constellation-card-badge {
  font-size: 0.65rem;
  background: var(--color-primary);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.constellation-card-desc {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.constellation-progress {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.4rem;
}
.constellation-progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.5s ease;
}
.constellation-card-emotions {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin: 0;
}
.constellation-emotion-tag.matched {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Section Header + Expand Button ===== */

.dashboard-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.expand-btn {
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-light);
  padding: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.expand-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ===== Constellation Full-screen Modal ===== */

.constellation-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  animation: constellationModalIn 250ms ease;
}
.constellation-modal[hidden] { display: none; }

@keyframes constellationModalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.constellation-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.constellation-modal__header h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}
.constellation-modal__close {
  appearance: none;
  border: none;
  background: none;
  font-size: 28px;
  line-height: 1;
  color: var(--color-text-light);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}
.constellation-modal__close:hover {
  background: var(--color-surface-warm);
  color: var(--color-text);
}
.constellation-modal__chart {
  flex: 1;
  min-height: 0;
  position: relative;
}