:root{
  --bg:#f7f8fb; --panel:#ffffff; --ink:#151922; --muted:#687082; --line:#e4e7ef;
  --accent:#3158ff; --accent2:#7b61ff; --good:#13a36f; --warn:#e29d21;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box} body{margin:0;background:radial-gradient(circle at top left,#eef2ff,transparent 32%),var(--bg);color:var(--ink)}
.hero{display:grid;grid-template-columns:1fr 280px;gap:24px;align-items:end;padding:48px clamp(18px,4vw,64px) 28px}
.eyebrow{color:var(--accent);font-weight:800;letter-spacing:.12em;text-transform:uppercase;font-size:.78rem}.hero h1{font-size:clamp(2rem,4vw,4.4rem);line-height:.96;margin:.2rem 0;max-width:1050px}.subtitle{color:var(--muted);font-size:1.08rem;max-width:760px}.hero-card,.panel{background:rgba(255,255,255,.84);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 50px rgba(20,24,36,.08)}.hero-card{padding:22px;display:flex;flex-direction:column;gap:8px}.dot{width:12px;height:12px;border-radius:99px;background:var(--good);display:inline-block}.hero-card small,.note,footer{color:var(--muted)}
.layout{display:grid;grid-template-columns:380px 1fr;gap:22px;padding:0 clamp(18px,4vw,64px) 36px}.panel{padding:24px}.setup{grid-row:span 2}h2{margin:0 0 18px;font-size:1.25rem}h3{margin:24px 0 12px;font-size:1rem}label{display:block;font-size:.82rem;color:var(--muted);font-weight:700;margin:12px 0 6px}.row{display:flex;gap:8px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}input,select{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 13px;font-size:.96rem;background:#fff;color:var(--ink)}button{border:1px solid var(--line);background:#fff;border-radius:14px;padding:11px 15px;font-weight:800;cursor:pointer;color:var(--ink)}button:hover{border-color:#c6ccdc}.primary{width:100%;margin-top:18px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border:0;padding:14px 18px}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:flex;gap:6px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:99px;background:#fff}.chip input{width:auto}.geo-results{margin-top:10px;display:grid;gap:8px}.geo-item{text-align:left;border-radius:14px;padding:10px;background:#f5f7fc;border:1px solid var(--line)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}.cards article{border:1px solid var(--line);border-radius:18px;padding:16px;background:linear-gradient(180deg,#fff,#f8f9ff)}.cards span{display:block;color:var(--muted);font-size:.82rem;font-weight:800}.cards strong{font-size:1.2rem;display:block;margin-top:8px}.table-panel{grid-column:2}.table-head{display:flex;align-items:center;justify-content:space-between}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);font-size:.92rem}th{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em}canvas{width:100%;border:1px solid var(--line);border-radius:18px;background:#fff}footer{padding:0 clamp(18px,4vw,64px) 28px;font-size:.86rem}@media(max-width:900px){.hero,.layout{grid-template-columns:1fr}.table-panel{grid-column:auto}.setup{grid-row:auto}.cards{grid-template-columns:1fr}.hero-card{align-items:flex-start}}
.secondary{width:100%;margin:10px 0 12px;border:1px solid #dfe4ef;background:#fff;color:#151922;border-radius:14px;padding:12px 14px;font-weight:800;cursor:pointer}
.secondary:hover{background:#f6f8fc}
.secondary.compact{width:auto;margin:0;padding:8px 10px;font-size:.78rem;white-space:nowrap}
.events-panel{grid-column:2 / 3}
.event-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.event{border:1px solid #e1e6f0;border-radius:18px;padding:14px;background:linear-gradient(180deg,#fff,#f8faff)}
.event span{display:block;color:#687082;font-size:13px;font-weight:800;margin-bottom:4px}
.event strong{display:block;font-size:20px;color:#151922}
.event small{display:block;color:#687082;margin-top:4px}
@media(max-width:900px){.events-panel{grid-column:auto}.event-grid{grid-template-columns:1fr}}

/* v0.5 visual refresh: cards with icons, cleaner dashboard, better chart/table polish */
.hero{padding-top:32px;align-items:center}.hero h1{letter-spacing:-.055em}.hero-card{border-radius:22px;background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(248,250,255,.88))}.layout{grid-template-columns:360px 1fr}.panel{border-radius:22px}.summary{padding:18px}.sky-cards{grid-template-columns:1.05fr 1.05fr 1.45fr 1.2fr;gap:14px}.sky-card{position:relative;display:flex;gap:14px;align-items:flex-start;min-height:116px;border:1px solid var(--line);border-radius:18px;padding:18px;background:linear-gradient(180deg,#fff,#fbfcff);box-shadow:0 12px 30px rgba(20,24,36,.045);overflow:hidden}.sky-card::after{content:"";position:absolute;inset:auto -30px -45px auto;width:120px;height:120px;border-radius:999px;background:rgba(49,88,255,.06);pointer-events:none}.icon-badge{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;flex:0 0 auto;font-size:22px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.55),0 10px 20px rgba(20,24,36,.08)}.sun-icon{background:linear-gradient(135deg,#ffd66b,#ff9d1c)}.moon-icon{background:linear-gradient(135deg,#f0f3f9,#aab4c5);font-size:28px;color:#313847}.twilight-icon{background:linear-gradient(135deg,#5f6bff,#a855f7,#ffb86b);color:white}.night-icon{background:linear-gradient(135deg,#071135,#162d7a);font-size:24px}.card-content{position:relative;z-index:1;width:100%}.sky-card span{display:block;color:var(--muted);font-size:.86rem;font-weight:900;margin:0 0 6px}.sky-card strong{font-size:1.36rem;line-height:1.2}.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px 18px;margin-top:18px}.mini-grid small,.twilight-list small,.night-card small{color:var(--muted);font-weight:800}.mini-grid b,.twilight-list b{font-size:.92rem}.twilight-list{display:grid;gap:8px;margin-top:10px}.twilight-list div{display:grid;grid-template-columns:88px 1fr;gap:10px;align-items:center}.night-card strong{font-size:1.55rem;margin-top:12px}.night-card small{display:block;margin-top:10px}.setup{background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(250,252,255,.84))}.primary{box-shadow:0 14px 26px rgba(49,88,255,.24)}.secondary{display:flex;align-items:center;justify-content:center;gap:8px}.secondary::before{content:"⌖"}.secondary.compact::before{content:none}.geo-results .note,.note{line-height:1.45}canvas{box-shadow:inset 0 0 0 1px rgba(255,255,255,.8);background:linear-gradient(180deg,#fff,#fcfdff)}.events-panel{grid-column:2 / 3;display:block}.table-panel{margin-top:-4px}table{box-shadow:0 10px 26px rgba(20,24,36,.035)}tbody tr:hover{background:#f8faff}@media(max-width:1200px){.sky-cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.layout{grid-template-columns:1fr}.summary{padding:18px}.sky-cards{grid-template-columns:1fr}.table-panel{margin-top:0}.events-panel{display:block}}


/* v0.7 astrophoto planner */
.astrophoto-panel{grid-column:2;background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(248,250,255,.9))}
.photo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:14px}
.photo-card{border:1px solid var(--line);border-radius:18px;padding:16px;background:linear-gradient(180deg,#fff,#f9fbff);box-shadow:0 10px 24px rgba(20,24,36,.04)}
.photo-card span{display:block;color:var(--muted);font-size:.82rem;font-weight:900;margin-bottom:8px}.photo-card strong{display:block;font-size:1.18rem}.photo-card small{display:block;color:var(--muted);margin-top:8px;line-height:1.35}.target-list{display:grid;gap:8px}.target-list article{display:grid;grid-template-columns:140px 1fr auto;gap:12px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:10px 12px;background:#fff}.target-list span{color:var(--muted);font-size:.9rem}.quality-badge{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:6px 10px;font-size:.78rem;font-weight:900;background:#eef2ff;color:#3158ff;border:1px solid #dfe4ff}.quality-badge.good{background:#eafaf3;color:#0f8a5c;border-color:#c6efd9}.quality-badge.ok{background:#eef2ff;color:#3158ff;border-color:#dfe4ff}.quality-badge.warn{background:#fff7e6;color:#b66c00;border-color:#ffe2a7}.quality-badge.bad{background:#fff0f0;color:#b42323;border-color:#ffd0d0}
@media(max-width:1200px){.photo-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.astrophoto-panel{grid-column:auto}.photo-grid{grid-template-columns:1fr}.target-list article{grid-template-columns:1fr}.quality-badge{width:max-content}}

/* v0.8 deep-sky catalog */
.tiny-note{color:var(--muted);font-size:.82rem;line-height:1.35;margin:6px 0 10px}.dso-chips .chip{background:linear-gradient(180deg,#fff,#f7f8ff)}.dso-controls{display:grid;grid-template-columns:1fr;gap:8px;margin-bottom:10px}.dso-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0 10px}.dso-actions span{color:var(--muted);font-size:.82rem;font-weight:900;margin-right:auto}.dso-table-wrap{max-height:360px;overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff}.dso-catalog-table{border-radius:0;box-shadow:none}.dso-catalog-table th,.dso-catalog-table td{padding:9px 10px;font-size:.82rem}.dso-catalog-table th:first-child,.dso-catalog-table td:first-child{width:38px;text-align:center}.dso-catalog-table input{width:auto}.dso-object-name strong{display:block;font-size:.9rem}.dso-object-name small{display:block;color:var(--muted);font-size:.74rem;line-height:1.25;margin-top:2px}.dso-panel{grid-column:2;background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(248,250,255,.9))}.dso-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.dso-card{position:relative;border:1px solid var(--line);border-radius:18px;padding:15px;background:linear-gradient(180deg,#fff,#f9fbff);box-shadow:0 10px 24px rgba(20,24,36,.04);min-height:164px}.dso-card b{display:block;font-size:1.25rem}.dso-card span{display:block;color:var(--muted);font-size:.86rem;font-weight:800;margin-top:3px}.dso-card strong{display:block;font-size:1.75rem;margin:14px 0 4px}.dso-card small{display:block;color:var(--muted);line-height:1.35}.dso-card .quality-badge{position:absolute;right:12px;top:12px}.row-subtitle{display:block;color:var(--muted);font-size:.78rem;margin-top:2px;line-height:1.25}@media(max-width:1200px){.dso-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.dso-panel{grid-column:auto}.dso-grid{grid-template-columns:1fr}.dso-table-wrap{max-height:420px}}

@media(min-width:901px) and (max-width:1400px){.sky-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.hero,.layout{grid-template-columns:1fr}.setup,.summary,.events-panel,.astrophoto-panel,.dso-panel,.table-panel{grid-column:auto}.panel{min-width:0}.row{flex-direction:column}.grid2{grid-template-columns:1fr}}

/* v0.9 dark observatory theme */
:root{
  --bg:#202326;
  --panel:#272c2f;
  --ink:#a9f7b8;
  --muted:#79cf88;
  --line:#3b4940;
  --accent:#89ff9d;
  --accent2:#38d76a;
  --good:#51e58a;
  --warn:#e2c766;
}
body{
  background:
    radial-gradient(circle at top left,rgba(68,135,87,.22),transparent 34%),
    linear-gradient(180deg,#25292d 0%,#1f2225 52%,#202326 100%);
  color:var(--ink);
}
.hero-card,
.panel{
  background:rgba(39,44,47,.9);
  border-color:rgba(137,255,157,.18);
  box-shadow:0 22px 58px rgba(0,0,0,.28);
}
.hero-card{
  background:linear-gradient(180deg,rgba(45,51,54,.94),rgba(34,39,42,.9));
}
.setup,
.summary,
.astrophoto-panel,
.dso-panel{
  background:linear-gradient(180deg,rgba(43,49,52,.93),rgba(35,40,43,.9));
}
.eyebrow,
h1,
h2,
h3,
strong,
b,
td,
.event strong,
.sky-card strong,
.photo-card strong,
.dso-card strong{
  color:var(--ink);
}
.subtitle,
.hero-card small,
.note,
footer,
label,
.tiny-note,
.cards span,
.event span,
.event small,
.sky-card span,
.mini-grid small,
.twilight-list small,
.night-card small,
.photo-card span,
.photo-card small,
.target-list span,
.dso-card span,
.dso-card small,
.row-subtitle{
  color:var(--muted);
}
input,
select,
button,
.secondary,
.chip,
.geo-item{
  background:#1f2427;
  border-color:rgba(137,255,157,.18);
  color:var(--ink);
}
input::placeholder{
  color:rgba(169,247,184,.55);
}
select{
  color-scheme:dark;
}
button:hover,
.secondary:hover{
  background:#26302b;
  border-color:rgba(137,255,157,.42);
}
.primary{
  background:linear-gradient(135deg,#245633,#13371f);
  color:var(--ink);
  border:1px solid rgba(137,255,157,.36);
  box-shadow:0 14px 28px rgba(32,111,54,.24);
}
.cards article,
.sky-card,
.event,
.photo-card,
.target-list article,
.dso-card{
  background:linear-gradient(180deg,#2d3336,#242a2d);
  border-color:rgba(137,255,157,.16);
}
.sky-card::after{
  background:rgba(137,255,157,.06);
}
.dso-chips .chip{
  background:linear-gradient(180deg,#252b2e,#202528);
}
.dso-table-wrap,
.dso-catalog-table{
  background:#242a2d;
}
table{
  background:#242a2d;
  box-shadow:0 10px 28px rgba(0,0,0,.22);
}
th{
  color:var(--muted);
}
th,
td{
  border-bottom-color:rgba(137,255,157,.14);
}
tbody tr:hover{
  background:#29322d;
}
.quality-badge{
  background:#203629;
  color:var(--ink);
  border-color:rgba(137,255,157,.25);
}
canvas,
.alt-chart{
  border:1px solid #e4e7ef;
  background:linear-gradient(180deg,#fff,#fcfdff);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.8);
}
.alt-chart{
  width:100%;
  min-height:420px;
  border-radius:18px;
  overflow:hidden;
}
.alt-chart canvas{
  border:0;
  border-radius:0;
  box-shadow:none;
}
.sky-visual-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);
  gap:16px;
  align-items:start;
}
.sky-tool{
  min-width:0;
}
.sky-tool h3{
  margin-top:0;
}
.sky-visual-grid .alt-chart,
.aladin-lite-view,
.planetarium-view{
  height:420px;
  min-height:420px;
}
.sky-visual-grid .alt-chart canvas{
  height:100%;
}
.viewer-head{
  display:grid;
  grid-template-columns:1fr minmax(180px,260px);
  gap:12px;
  align-items:end;
  margin-bottom:12px;
}
.viewer-head h3{
  margin-bottom:0;
}
.viewer-head select{
  margin:0;
}
.aladin-lite-view{
  position:relative;
  border:1px solid #e4e7ef;
  border-radius:18px;
  overflow:hidden;
  background:#06080d;
}
.aladin-placeholder{
  height:100%;
  display:grid;
  place-items:center;
  padding:24px;
  text-align:center;
  color:#a9f7b8;
  background:linear-gradient(180deg,#14191d,#090c11);
  font-weight:800;
}
.aladin-lite-view canvas{
  border:0 !important;
  border-radius:0 !important;
  background:transparent !important;
  box-shadow:none !important;
}
.aladin-lite-view img{
  max-width:none;
}
.planetarium-view{
  position:relative;
  overflow:hidden;
  border-radius:18px;
  border:1px solid #e4e7ef;
  background:#080c16;
}
.stellarium-canvas{
  width:100% !important;
  height:100% !important;
  display:block;
  border:0 !important;
  background:#080c16;
  border-radius:0 !important;
  box-shadow:none !important;
  touch-action:none;
}
.planetarium-loading{
  position:absolute;
  z-index:2;
  inset:0;
  display:grid;
  place-items:center;
  padding:24px;
  text-align:center;
  color:#a9f7b8;
  background:linear-gradient(180deg,#14191d,#090c11);
  font-weight:800;
  pointer-events:none;
}
.planetarium-loading[hidden]{
  display:none;
}
.planetarium-placeholder{
  height:100%;
  display:grid;
  place-items:center;
  padding:24px;
  text-align:center;
  color:#a9f7b8;
  background:linear-gradient(180deg,#14191d,#090c11);
  font-weight:800;
}
.planetarium-info{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:10px;
  color:var(--muted);
  font-size:.82rem;
  font-weight:900;
}
.planetarium-info span{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:5px 8px;
  border:1px solid rgba(137,255,157,.14);
  border-radius:999px;
  background:#1f2427;
  line-height:1.2;
}

/* v0.9.11 deep-sky observability filter */
.dso-controls{
  grid-template-columns:repeat(2,minmax(0,1fr));
  align-items:end;
}
.dso-filter-toggle{
  min-height:45px;
  display:flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:11px 12px;
  border:1px solid rgba(137,255,157,.18);
  border-radius:14px;
  background:#1f2427;
  color:var(--ink);
}
.dso-filter-toggle input{
  width:auto;
  margin:0;
}
.dso-filter-toggle span{
  color:var(--ink);
  font-size:.86rem;
  font-weight:800;
  line-height:1.2;
}
.dso-alt-cell{
  color:var(--ink);
  font-weight:900;
  white-space:nowrap;
}

@media(max-width:1500px){
  .sky-visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .planetarium-tool{grid-column:1 / -1}
}
@media(max-width:1200px){
  .sky-visual-grid{grid-template-columns:1fr}
  .planetarium-tool{grid-column:auto}
}
@media(max-width:900px){
  .dso-controls{grid-template-columns:1fr}
  .viewer-head{grid-template-columns:1fr}
}

/* v0.9.23 single-column observatory layout */
.layout{
  grid-template-columns:1fr;
}
.setup,
.summary,
.events-panel,
.astrophoto-panel,
.dso-panel,
.table-panel,
.bodies-panel,
.dso-select-panel,
.sky-visual-panel{
  grid-column:1 / -1;
}
.setup{
  grid-row:auto;
}
.table-panel{
  margin-top:0;
}
.bodies-panel,
.dso-select-panel,
.sky-visual-panel{
  background:linear-gradient(180deg,rgba(43,49,52,.93),rgba(35,40,43,.9));
}
.summary{order:1}
.observer-setup{order:2}
.bodies-panel{order:3}
.dso-select-panel{order:4}
.sky-visual-panel{order:5}
.events-panel{order:6}
.astrophoto-panel{order:7}
.dso-panel{order:8}
.table-panel{order:9}
.setup-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:18px;
}
.setup-head h2{
  margin:0;
}
.setup-head .primary{
  width:auto;
  min-width:220px;
  margin:0;
  padding:13px 18px;
}
.observer-grid{
  display:grid;
  grid-template-columns:minmax(280px,1.35fr) minmax(260px,.9fr) minmax(220px,.7fr);
  gap:16px;
  align-items:start;
}
.observer-location{
  min-width:0;
}
.bodies-panel .chips{
  gap:10px;
}
.dso-select-panel .dso-controls{
  grid-template-columns:1fr 1fr minmax(220px,.72fr) minmax(220px,.72fr);
}
.dso-select-panel .dso-table-wrap{
  max-height:430px;
}
@media(max-width:1200px){
  .observer-grid{
    grid-template-columns:1fr 1fr;
  }
  .observer-location{
    grid-column:1 / -1;
  }
  .dso-select-panel .dso-controls{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}
@media(max-width:900px){
  .setup-head{
    align-items:stretch;
    flex-direction:column;
  }
  .setup-head .primary{
    width:100%;
    min-width:0;
  }
  .observer-grid,
  .dso-select-panel .dso-controls{
    grid-template-columns:1fr;
  }
}