:root {
  --bg: #070b1a;
  --bg2: #0c1230;
  --card: rgba(255, 255, 255, 0.04);
  --card-brd: rgba(255, 255, 255, 0.09);
  --text: #eef1fb;
  --muted: #9aa2c4;
  --accent: #ffd479;
  --good: #6ee7b7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    "Malgun Gothic",
    sans-serif;
  background:
    radial-gradient(1200px 700px at 70% -10%, #1a2350 0%, transparent 60%),
    radial-gradient(900px 600px at 10% 10%, #16123a 0%, transparent 55%),
    linear-gradient(180deg, var(--bg2), var(--bg));
  background-attachment: fixed;
  overflow-x: hidden;
}

/* twinkling starfield */
.stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 20px 30px, #fff, transparent),
    radial-gradient(1px 1px at 140px 80px, #cfd6ff, transparent),
    radial-gradient(1px 1px at 260px 160px, #fff, transparent),
    radial-gradient(1.5px 1.5px at 380px 60px, #fff, transparent),
    radial-gradient(1px 1px at 500px 200px, #dfe6ff, transparent),
    radial-gradient(1px 1px at 620px 120px, #fff, transparent);
  background-size: 700px 300px;
  opacity: 0.5;
  animation: twinkle 6s ease-in-out infinite alternate;
}
@keyframes twinkle {
  from {
    opacity: 0.35;
  }
  to {
    opacity: 0.65;
  }
}

header,
main,
footer {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.85rem clamp(1rem, 4vw, 2rem);
  background: rgba(7, 11, 26, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-brd);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.brand-mark {
  font-size: 1.4rem;
}

.nav-links {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-left: auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}
.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}
.nav-link.active {
  color: var(--text);
  border-color: var(--card-brd);
  background: rgba(255, 255, 255, 0.07);
}
.nav-soon {
  font-size: 0.62rem;
  color: var(--accent);
  border: 1px solid rgba(255, 212, 121, 0.4);
  border-radius: 6px;
  padding: 0 0.25rem;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Home feature gallery */
.home-intro {
  text-align: center;
}
.home-intro h2 {
  margin: 0.5rem 0 0.35rem;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
}
.home-intro p {
  margin: 0;
  color: var(--muted);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.feature-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 18px;
  padding: 1.5rem;
  transition:
    transform 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.06);
}
.feature-card.soon {
  opacity: 0.72;
}
.feature-emoji {
  font-size: 2.4rem;
}
.feature-name {
  margin-top: 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.badge {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(255, 212, 121, 0.4);
  border-radius: 7px;
  padding: 0.05rem 0.35rem;
}
.feature-tagline {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Coming-soon view */
.soon-view {
  text-align: center;
  padding: 3rem 2rem;
}
.soon-emoji {
  font-size: 3.5rem;
}
.soon-view h2 {
  margin: 0.75rem 0 0.25rem;
}
.soon-tag {
  color: var(--muted);
  margin: 0 0 1rem;
}
.soon-msg {
  color: var(--muted);
  margin: 0 0 1.75rem;
}
.btn {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--card-brd);
  border-radius: 999px;
  padding: 0.55rem 1.1rem;
  transition: background 0.15s ease;
}
.btn:hover {
  background: rgba(255, 255, 255, 0.12);
}
.loading {
  text-align: center;
  color: var(--muted);
  padding: 3rem;
}

/* ---- Planets feature ---- */
.feature-head h2 {
  margin: 0 0 0.25rem;
  font-size: 1.6rem;
}
.muted {
  color: var(--muted);
}
.btn.small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.loc-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 14px;
  padding: 0.75rem 1rem;
}
.loc-here {
  font-weight: 600;
}
.loc-here small {
  color: var(--muted);
  font-weight: 400;
  margin-left: 0.4rem;
}
.loc-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
#loc-select {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--card-brd);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
}
#loc-select option {
  color: #111;
}
.loc-msg {
  color: var(--accent);
  font-size: 0.88rem;
  margin: -0.5rem 0 0;
}

.sky-summary {
  padding: 1.1rem 1.3rem;
}
.sky-head {
  margin: 0 0 0.3rem;
  font-size: 1.15rem;
}
.sky-head strong {
  color: var(--accent);
}
.sky-sun {
  margin: 0;
  font-size: 0.92rem;
}
.sky-sun strong {
  color: var(--text);
}

.planet-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.planet-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 16px;
  padding: 1rem 1.2rem;
}
.planet-row.dim {
  opacity: 0.6;
}
.pl-emoji {
  font-size: 1.9rem;
  flex: 0 0 auto;
  width: 2.2rem;
  text-align: center;
}
.pl-main {
  flex: 1 1 auto;
  min-width: 0;
}
.pl-name {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.pl-mag {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 400;
}
.tag {
  font-size: 0.66rem;
  border-radius: 6px;
  padding: 0.05rem 0.4rem;
  border: 1px solid transparent;
}
.tag.eye {
  color: var(--good);
  border-color: rgba(110, 231, 183, 0.4);
}
.tag.tele {
  color: #aab4e6;
  border-color: rgba(170, 180, 230, 0.4);
}
.pl-when {
  color: var(--text);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}
.pl-best {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.15rem;
}
.pl-best strong {
  color: var(--text);
}
.pl-parent {
  font-size: 0.8rem;
  margin-top: 0.35rem;
}
.alt-bar {
  margin-top: 0.5rem;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}
.alt-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #6ee7b7, #ffd479);
  border-radius: 999px;
}
.pl-badge {
  flex: 0 0 auto;
  align-self: flex-start;
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--card-brd);
}
.b-bright {
  color: #fff2cc;
  border-color: rgba(255, 212, 121, 0.5);
}
.b-ok {
  color: var(--text);
}
.b-dim {
  color: var(--muted);
}
.b-tele {
  color: #aab4e6;
}

.hidden-planets {
  margin-top: 0.25rem;
}
.hidden-planets summary {
  cursor: pointer;
  color: var(--muted);
  padding: 0.5rem 0;
  font-size: 0.9rem;
}
.hidden-planets .planet-row {
  margin-top: 0.5rem;
}
.fine {
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

/* ---- Tonight's sky feature ---- */
.constellations-hero {
  padding: 1.25rem 1.4rem;
}
.constellations-hero-copy h3 {
  margin: 0.2rem 0 0.4rem;
  font-size: 1.2rem;
}
.constellations-season {
  margin: 0;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.constellations-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.constellation-card {
  padding: 1.2rem;
}
.constellation-emoji {
  font-size: 2rem;
}
.constellation-name {
  margin: 0.45rem 0 0.2rem;
  font-size: 1.1rem;
}
.constellation-meta {
  margin: 0;
  color: var(--accent);
  font-size: 0.88rem;
}
.constellation-note {
  margin: 0.45rem 0 0.55rem;
  color: var(--muted);
  line-height: 1.55;
}
.constellation-time {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text);
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.tl-card,
.moon-card {
  padding: 1.2rem 1.3rem;
}
.tl-card h3,
.moon-info h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}
.tl-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.32rem 0;
}
.tl-ico {
  width: 1.4rem;
  text-align: center;
}
.tl-label {
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 0.92rem;
}
.tl-time {
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
}
.tl-time.hi {
  color: var(--accent);
  font-weight: 700;
}
.tl-night {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  padding: 0.35rem 0;
  opacity: 0.7;
}
.moon-card {
  display: flex;
  gap: 1rem;
  align-items: center;
}
.moon-mini {
  flex: 0 0 auto;
  width: 96px;
  height: 96px;
  filter: drop-shadow(0 0 18px rgba(255, 240, 200, 0.15));
}
.moon-info {
  min-width: 0;
}
.moon-info h3 {
  margin-bottom: 0.2rem;
}
.moon-info p {
  margin: 0.25rem 0;
  font-size: 0.92rem;
}
.moon-info strong {
  color: var(--text);
}
.inline-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
}
.inline-link:hover {
  text-decoration: underline;
}
@media (max-width: 620px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 20px;
  backdrop-filter: blur(6px);
}

/* Hero / today */
.hero {
  display: flex;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.moon-wrap {
  filter: drop-shadow(0 0 40px rgba(255, 240, 200, 0.18));
  flex: 0 0 auto;
}
.today-info {
  flex: 1 1 260px;
  min-width: 240px;
}
.today-date {
  color: var(--muted);
  margin: 0 0 0.25rem;
}
.phase-name {
  margin: 0;
  font-size: 1.9rem;
}
.phase-en {
  margin: 0.15rem 0 1rem;
  color: var(--muted);
  font-style: italic;
}
.stats {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.stats li {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 0.6rem 0.7rem;
}
.stats span {
  color: var(--muted);
  font-size: 0.8rem;
}
.stats strong {
  font-size: 1.05rem;
  margin-top: 0.15rem;
}
.verdict {
  display: inline-block;
  margin: 0;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid var(--card-brd);
}
.verdict strong {
  color: var(--accent);
}
.q-best strong {
  color: var(--good);
}
.q-good strong {
  color: #9be7c4;
}
.q-ok strong {
  color: var(--accent);
}
.q-poor strong {
  color: #ff9d9d;
}

/* Best night callout */
.best {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 2rem;
}
.best-icon {
  font-size: 2.5rem;
}
.best-title {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.best-main {
  margin: 0.15rem 0;
  font-size: 1.35rem;
  font-weight: 700;
}
.best-illum {
  color: var(--good);
  font-size: 1rem;
  font-weight: 500;
}
.best-sub {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.best-sub strong {
  color: var(--text);
}

/* Section headings */
section h2 {
  font-size: 1.3rem;
  margin: 0 0 1rem;
}

/* Key phases */
.phase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}
.phase-card {
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 16px;
  padding: 1.1rem 0.5rem;
  text-align: center;
}
.phase-emoji {
  font-size: 1.8rem;
}
.phase-ko {
  margin-top: 0.35rem;
  font-weight: 600;
}
.phase-date {
  color: var(--text);
  margin-top: 0.2rem;
}
.phase-away {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.1rem;
}

/* Forecast calendar */
.forecast-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.forecast-head h2 {
  margin: 0;
}
.legend {
  color: var(--muted);
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot.good {
  background: var(--good);
  box-shadow: 0 0 8px var(--good);
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
  gap: 0.6rem;
}
.cal-cell {
  background: var(--card);
  border: 1px solid var(--card-brd);
  border-radius: 14px;
  padding: 0.6rem 0.3rem 0.5rem;
  text-align: center;
  transition:
    transform 0.15s ease,
    border-color 0.15s ease;
}
.cal-cell:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.25);
}
.cal-cell.good {
  border-color: rgba(110, 231, 183, 0.55);
  box-shadow: 0 0 18px rgba(110, 231, 183, 0.15);
}
.cal-date {
  font-weight: 600;
  font-size: 0.9rem;
}
.cal-wday {
  color: var(--muted);
  font-size: 0.72rem;
}
.cal-moon {
  margin: 0.3rem auto 0.15rem;
  width: 56px;
  height: 56px;
}
.cal-illum {
  color: var(--muted);
  font-size: 0.78rem;
}
.cal-cell.good .cal-illum {
  color: var(--good);
}

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  padding: 0 1rem 3rem;
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.6;
}

@media (max-width: 760px) {
  .constellations-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .phase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero {
    padding: 1.5rem;
  }
  .best {
    padding: 1.25rem;
  }
}