/* ================================================================
   히어로 / 인트로 / 카드 / 상세 / 비교 / 스케일 / 공전
   ================================================================ */

/* ------- HERO ------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 720px;
  width: 100%;
  overflow: hidden;
  background: #000;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 30%, rgba(5, 5, 16, 0.7) 100%),
    linear-gradient(180deg, rgba(5,5,16,0.55) 0%, rgba(5,5,16,0.25) 30%, rgba(5,5,16,0.85) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 var(--pad) 96px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.hero-eyebrow {
  margin-bottom: 26px;
  color: oklch(0.95 0.05 80);
}
.hero-title {
  font-size: clamp(48px, 9vw, 128px);
  line-height: 0.95;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: #fff;
  margin: 0;
  text-shadow: 0 2px 40px rgba(0,0,0,0.5);
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, oklch(0.95 0.05 80), oklch(0.85 0.15 50));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle {
  margin-top: 30px;
  max-width: 560px;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
}
.hero-meta {
  margin-top: 48px;
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
}
.hero-stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 6px;
}
.hero-stat-value {
  font-family: var(--font-mono);
  font-size: 18px;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}
.hero-scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.6; }
  50% { transform: scaleY(0.4); opacity: 1; }
}

/* ------- INTRO ------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 900px) {
  .intro-grid { grid-template-columns: 1fr; gap: 48px; }
}
.intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.intro-stat {
  background: var(--bg-2);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.intro-stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}
.intro-stat-value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 36px);
  color: var(--text-0);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.intro-stat-note {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
}

/* ------- PLANET GRID / LIST ------- */
.planet-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 1100px) { .planet-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px)  { .planet-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .planet-grid { grid-template-columns: 1fr; } }

.planet-list { display: flex; flex-direction: column; gap: 12px; }

.planet-card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 24px 24px;
  cursor: pointer;
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
  overflow: hidden;
  text-align: left;
  font-family: inherit;
  color: inherit;
}
.planet-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--planet-color, transparent) 0%, transparent 70%);
  opacity: 0.18;
  transform: translate(40%, -40%);
  pointer-events: none;
  transition: opacity .25s var(--ease);
}
.planet-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--bg-3);
}
.planet-card:hover::before { opacity: 0.35; }

.planet-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.planet-card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-3);
}
.planet-card-img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  margin: 0 auto 22px;
  max-width: 160px;
  box-shadow:
    0 0 60px var(--planet-color, transparent),
    inset -10px -10px 30px rgba(0,0,0,0.4);
  position: relative;
  z-index: 1;
}
.planet-card-img.has-rings::after {
  content: "";
  position: absolute;
  inset: -18% -28%;
  border: 1.5px solid var(--planet-color);
  border-radius: 50%;
  transform: rotateX(78deg);
  opacity: 0.6;
}
.planet-card-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-0);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.planet-card-name-en {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.planet-card-stats {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.planet-card-stat {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-family: var(--font-mono);
}
.planet-card-stat-label { color: var(--text-3); letter-spacing: 0.06em; text-transform: uppercase; font-size: 10px; }
.planet-card-stat-val   { color: var(--text-1); font-variant-numeric: tabular-nums; }

/* List 변형 */
.planet-row {
  display: grid;
  grid-template-columns: 60px 1fr 2fr 100px;
  gap: 24px;
  align-items: center;
  padding: 18px 22px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
  text-align: left;
  font-family: inherit;
  color: inherit;
}
.planet-row:hover { background: var(--bg-3); border-color: var(--line-strong); }
.planet-row-img {
  width: 56px; height: 56px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 24px var(--planet-color, transparent), inset -4px -4px 10px rgba(0,0,0,0.4);
}
.planet-row-name { font-size: 18px; font-weight: 600; color: var(--text-0); }
.planet-row-name-en { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; }
.planet-row-meta {
  font-size: 13px;
  color: var(--text-2);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.planet-row-meta strong { color: var(--text-1); font-family: var(--font-mono); font-weight: 500; margin-left: 6px; }
.planet-row-arrow { text-align: right; font-family: var(--font-mono); font-size: 13px; color: var(--text-3); }
@media (max-width: 760px) {
  .planet-row { grid-template-columns: 56px 1fr; }
  .planet-row-meta, .planet-row-arrow { display: none; }
}

/* ------- DETAIL PANEL ------- */
.detail-backdrop {
  position: fixed;
  inset: 0;
  background: color-mix(in oklab, var(--bg-0) 75%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s var(--ease);
}
.detail-backdrop[data-open="true"] { opacity: 1; pointer-events: auto; }
.detail-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(720px, 95vw);
  background: var(--bg-1);
  border-left: 1px solid var(--line);
  z-index: 101;
  transform: translateX(100%);
  transition: transform .45s var(--ease);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.detail-panel[data-open="true"] { transform: translateX(0); }
.detail-close {
  position: absolute;
  top: 24px; right: 24px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--line);
  color: var(--text-0);
  cursor: pointer;
  display: grid;
  place-items: center;
  z-index: 2;
  font-size: 18px;
  transition: background .2s var(--ease);
}
.detail-close:hover { background: var(--bg-elev); }
.detail-hero {
  position: relative;
  padding: 56px 48px 40px;
  background:
    radial-gradient(circle at 70% 30%, var(--planet-color, transparent) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-elev), var(--bg-1));
  border-bottom: 1px solid var(--line);
}
.detail-hero::before {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 50%;
  background: radial-gradient(circle at center, var(--planet-color) 0%, transparent 50%);
  opacity: 0.15;
  pointer-events: none;
}
.detail-order {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-3);
  margin-bottom: 16px;
}
.detail-name { font-size: 56px; font-weight: 700; line-height: 1; letter-spacing: -0.03em; color: var(--text-0); margin: 0; }
.detail-name-en { font-family: var(--font-mono); font-size: 14px; color: var(--text-2); margin-top: 12px; letter-spacing: 0.08em; }
.detail-img {
  margin: 32px auto 8px;
  width: 220px;
  aspect-ratio: 1;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 80px var(--planet-color), inset -16px -16px 50px rgba(0,0,0,0.4);
  position: relative;
  z-index: 1;
}
.detail-img.has-rings::after {
  content: "";
  position: absolute;
  inset: -18% -32%;
  border: 2px solid var(--planet-color);
  border-radius: 50%;
  transform: rotateX(78deg);
  opacity: 0.6;
}
.detail-body { padding: 40px 48px 48px; flex: 1; }
.detail-desc { font-size: 17px; line-height: 1.7; color: var(--text-1); margin-bottom: 36px; max-width: 60ch; text-wrap: pretty; }
.detail-table { display: flex; flex-direction: column; }
.detail-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.detail-row:last-child { border-bottom: none; }
.detail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  padding-top: 4px;
}
.detail-val { font-size: 15px; color: var(--text-0); line-height: 1.5; font-variant-numeric: tabular-nums; }
.detail-fact {
  margin-top: 36px;
  padding: 24px 26px;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  position: relative;
}
.detail-fact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.detail-fact-text { font-size: 15px; line-height: 1.6; color: var(--text-0); }

@media (max-width: 600px) {
  .detail-hero { padding: 40px 24px 28px; }
  .detail-body { padding: 28px 24px 36px; }
  .detail-name { font-size: 40px; }
  .detail-row { grid-template-columns: 1fr; gap: 4px; padding: 12px 0; }
}

/* ------- COMPARE TABLE ------- */
.compare-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.compare-tab {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  cursor: pointer;
  transition: all .2s var(--ease);
}
.compare-tab[data-active="true"] {
  background: var(--accent-soft);
  border-color: var(--accent-line);
  color: var(--accent);
}
.compare-table-wrap {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-row {
  display: grid;
  grid-template-columns: 200px 1fr 140px;
  align-items: center;
  gap: 24px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
}
.compare-row:last-child { border-bottom: none; }
.compare-row-name {
  display: flex;
  align-items: center;
  gap: 14px;
}
.compare-dot {
  width: 32px; height: 32px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 14px var(--planet-color, transparent), inset -3px -3px 8px rgba(0,0,0,0.35);
  flex-shrink: 0;
}
.compare-row-name-text { font-size: 15px; font-weight: 600; color: var(--text-0); }
.compare-row-name-en { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); }
.compare-bar {
  height: 8px;
  background: var(--bg-3);
  border-radius: 999px;
  position: relative;
  overflow: hidden;
}
.compare-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--planet-color), color-mix(in oklab, var(--planet-color) 60%, white));
  transition: width .8s var(--ease);
}
.compare-val { font-family: var(--font-mono); font-size: 13px; color: var(--text-0); text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 760px) {
  .compare-row { grid-template-columns: 130px 1fr 80px; padding: 14px 18px; gap: 14px; }
  .compare-val { font-size: 11px; }
}

/* ------- SCALE VIZ ------- */
.scale-stage {
  position: relative;
  padding: 60px 0;
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}
.scale-row {
  display: flex;
  align-items: flex-end;
  gap: 24px;
  padding: 0 60px;
  min-width: 1100px;
  height: 320px;
}
.scale-body {
  position: relative;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
  box-shadow: 0 0 50px var(--planet-color), inset -8px -8px 20px rgba(0,0,0,0.4);
}
.scale-label {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  white-space: nowrap;
}
.scale-label-name { font-size: 13px; font-weight: 600; color: var(--text-0); }
.scale-label-size { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* ------- ORBIT SIM ------- */
.orbit-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 720px;
  margin: 0 auto;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, oklch(0.18 0.05 270 / 0.4) 0%, transparent 70%),
    radial-gradient(circle at 30% 30%, oklch(0.3 0.08 270 / 0.2) 0%, transparent 50%);
  border: 1px solid var(--line);
}
.orbit-sun {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, oklch(0.95 0.15 90), oklch(0.7 0.2 50));
  box-shadow: 0 0 40px oklch(0.7 0.2 50 / 0.8), 0 0 80px oklch(0.7 0.2 50 / 0.5);
  z-index: 5;
}
.orbit-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px dashed var(--line-strong);
  pointer-events: none;
}
.orbit-track {
  position: absolute;
  top: 50%; left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: orbitSpin linear infinite;
  animation-duration: var(--orbit-duration, 10s);
  pointer-events: none;
}
@keyframes orbitSpin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}
.orbit-planet {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translate(50%, -50%);
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  box-shadow: 0 0 16px var(--planet-color), inset -3px -3px 8px rgba(0,0,0,0.4);
  pointer-events: auto;
  transition: transform .2s var(--ease);
  z-index: 3;
}
.orbit-planet:hover { transform: translate(50%, -50%) scale(1.6); }
.orbit-planet-label {
  position: absolute;
  top: 130%;
  left: 50%;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-1);
  white-space: nowrap;
  opacity: 0;
  transition: opacity .2s var(--ease);
  pointer-events: none;
}
.orbit-planet:hover .orbit-planet-label { opacity: 1; }
.orbit-controls {
  display: flex;
  gap: 8px;
  margin-top: 28px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ------- TWEAKS panel size override ------- */
.tweaks-section + .tweaks-section { margin-top: 14px; }