/* Astronomy Tools – at.css v1.0  |  extracalc.com */
#at-app {
  --bg:    #03080f;
  --bg2:   #060f1e;
  --bg3:   #0a1628;
  --bg4:   #0e1d36;
  --bd:    rgba(60,100,220,0.18);
  --bd2:   rgba(60,100,220,0.30);
  --txt:   rgba(210,228,255,0.92);
  --txt2:  rgba(130,165,220,0.65);
  --txt3:  rgba(80,115,180,0.45);
  --acc:   #4a8fff;
  --acc2:  #1a3a99;
  --gold:  #ffd166;
  --green: #4dca70;
  --red:   #e05c3a;
  --font:  -apple-system,'Inter','Segoe UI',sans-serif;

  font-family: var(--font);
  background:  var(--bg);
  color:       var(--txt);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 60px rgba(0,10,40,0.7);
  width: 100%;
}

/* ── Header ── */
#at-header {
  background: linear-gradient(135deg, #060f1e 0%, #0e1d36 100%);
  border-bottom: 1px solid var(--bd);
  padding: 18px 24px 14px;
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
}
#at-logo {
  font-size: 20px; font-weight: 800; letter-spacing: -0.4px; color: var(--txt);
}
#at-logo span { color: var(--acc); }
#at-tagline { font-size: 12px; color: var(--txt3); }

/* ── Input strip ── */
#at-input-strip {
  background: var(--bg2);
  border-bottom: 1px solid var(--bd);
  padding: 14px 20px;
  display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end;
}
.at-input-group { display: flex; flex-direction: column; gap: 5px; flex: 1; min-width: 200px; }
.at-input-group.at-input-narrow { min-width: 140px; flex: 0 1 160px; }
.at-input-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px; color: var(--txt3); }
.at-input-row { display: flex; gap: 6px; }
.at-hint { font-size: 11px; color: var(--txt2); min-height: 14px; margin-top: 2px; }

#at-app input[type="text"],
#at-app input[type="date"],
#at-app input[type="time"],
#at-app select {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--bd);
  border-radius: 7px;
  padding: 7px 10px;
  color: var(--txt); font-family: var(--font); font-size: 13px;
  outline: none; transition: border-color 0.15s;
  width: 100%; min-width: 0;
  color-scheme: dark;
}
#at-app input:focus, #at-app select:focus { border-color: var(--acc); }
#at-app input::placeholder { color: var(--txt3); }

/* ── Buttons ── */
.at-btn {
  border: none; border-radius: 7px; cursor: pointer;
  font-family: var(--font); font-weight: 600;
  transition: opacity 0.15s, background 0.15s;
  white-space: nowrap; flex-shrink: 0;
}
.at-btn-sm { font-size: 12px; padding: 7px 11px; }
.at-btn-accent  { background: var(--acc);  color: #fff; }
.at-btn-accent:hover { opacity: 0.82; }
.at-btn-ghost   { background: rgba(255,255,255,0.05); border: 1px solid var(--bd) !important; color: var(--txt2); font-size: 12px; padding: 7px 10px; }
.at-btn-ghost:hover { border-color: var(--acc) !important; color: var(--txt); }
.at-btn-primary {
  background: linear-gradient(135deg, var(--acc2), var(--acc));
  color: #fff; font-size: 14px; padding: 9px 24px;
  box-shadow: 0 2px 16px rgba(74,143,255,0.22);
  align-self: flex-end; flex-shrink: 0;
}
.at-btn-primary:hover { opacity: 0.86; }
.at-link-btn { background: none; border: none; cursor: pointer; font-family: var(--font); font-size: 11px; color: var(--acc); padding: 0; }
.at-link-btn:hover { opacity: 0.7; }
.at-sep { color: var(--txt3); font-size: 11px; }

/* ── Tool selector ── */
#at-tool-selector {
  background: var(--bg2);
  border-bottom: 1px solid var(--bd);
  padding: 12px 20px;
  display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
}
.at-selector-label { font-size: 11px; font-weight: 600; color: var(--txt3); text-transform: uppercase; letter-spacing: 0.5px; flex-shrink: 0; }
#at-tool-chips { display: flex; gap: 7px; flex-wrap: wrap; flex: 1; }
.at-chip {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 12px; border-radius: 99px; cursor: pointer;
  border: 1.5px solid var(--bd);
  font-size: 12px; font-weight: 500; color: var(--txt2);
  transition: all 0.15s; user-select: none;
}
.at-chip input { display: none; }
.at-chip.checked {
  border-color: var(--acc);
  color: var(--txt);
  background: rgba(74,143,255,0.1);
}
.at-chip:hover { border-color: var(--acc); color: var(--txt); }
.at-chip-icon { font-size: 14px; }
.at-selector-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }

/* ── Results grid ── */
#at-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  padding: 16px;
}
@media (max-width: 720px) { #at-results-grid { grid-template-columns: 1fr; } }

/* ── Cards ── */
.at-card {
  background: var(--bg2);
  border: 1px solid var(--bd);
  border-radius: 12px;
  overflow: hidden;
}
.at-card-wide { grid-column: 1 / -1; }

.at-card-header {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px 12px;
  background: var(--bg3);
  border-bottom: 1px solid var(--bd);
}
.at-card-icon { font-size: 24px; flex-shrink: 0; margin-top: 1px; }
.at-card-title { font-size: 14px; font-weight: 700; color: var(--txt); }
.at-card-sub   { font-size: 11px; color: var(--txt3); margin-top: 2px; }
.at-card-body  { padding: 14px 16px; }

/* Stats row */
.at-stats-row { display: flex; gap: 8px; flex-wrap: wrap; }
.at-stat {
  flex: 1; min-width: 70px;
  background: var(--bg3); border-radius: 8px; padding: 10px 8px;
  text-align: center; border: 1px solid var(--bd);
}
.at-stat-val   { font-size: 18px; font-weight: 700; color: var(--txt); line-height: 1.2; }
.at-stat-label { font-size: 10px; color: var(--txt3); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.4px; }

/* Info grid */
.at-info-grid { display: flex; flex-direction: column; gap: 0; }
.at-info-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 0; border-bottom: 1px solid rgba(60,100,220,0.08);
  font-size: 12px; color: var(--txt2); gap: 8px;
}
.at-info-row:last-child { border-bottom: none; }
.at-info-row b { color: var(--txt); font-size: 12px; font-weight: 600; text-align: right; }
.at-info-row.at-highlight { background: rgba(255,209,102,0.06); margin: 0 -4px; padding: 7px 4px; border-radius: 4px; }
.at-info-row.at-highlight b { color: var(--gold); }

.at-divider { height: 1px; background: var(--bd); margin: 12px 0; }

/* Use tip */
.at-use-tip {
  margin-top: 12px; padding: 10px 12px;
  background: rgba(74,143,255,0.06);
  border-left: 3px solid var(--acc);
  border-radius: 0 6px 6px 0;
  font-size: 11px; color: var(--txt2); line-height: 1.6;
}
.at-use-tip b { color: var(--txt); }

/* Sun arc */
.at-sun-arc-wrap { margin-top: 14px; }
#sun-arc-canvas { width: 100%; height: 90px; display: block; }
.at-arc-label-row { display: flex; justify-content: space-between; font-size: 10px; color: var(--txt3); margin-top: 3px; }

/* Golden Hour blocks */
.at-golden-blocks { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 600px) { .at-golden-blocks { grid-template-columns: 1fr; } }
.at-golden-block { background: var(--bg3); border-radius: 8px; padding: 12px; border: 1px solid var(--bd); }
.at-golden-block-title { font-size: 12px; font-weight: 700; color: var(--txt); margin-bottom: 8px; }
.at-golden-am { border-top: 3px solid #88aaff; }
.at-golden-pm { border-top: 3px solid var(--gold); }

/* Moon */
.at-moon-main { display: flex; gap: 16px; align-items: flex-start; }
.at-moon-phasename { font-size: 18px; font-weight: 700; color: var(--txt); }
.at-moon-calendar {
  display: flex; gap: 4px; flex-wrap: wrap; margin-top: 14px;
}
.at-moon-day {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; cursor: default;
  border: 1px solid var(--bd);
  title: '';
}
.at-moon-day.today { border-color: var(--acc); box-shadow: 0 0 6px rgba(74,143,255,0.4); }

/* Planet table */
.at-planet-table {
  width: 100%; border-collapse: collapse;
  font-size: 12px; color: var(--txt2);
}
.at-planet-table th {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--txt3);
  padding: 7px 10px; text-align: left;
  border-bottom: 1px solid var(--bd);
  background: var(--bg3);
}
.at-planet-table td {
  padding: 8px 10px; border-bottom: 1px solid rgba(60,100,220,0.06);
  vertical-align: middle;
}
.at-planet-table tr:last-child td { border-bottom: none; }
.at-planet-table tr:hover td { background: rgba(74,143,255,0.04); }
.at-planet-name { font-weight: 600; color: var(--txt); display: flex; align-items: center; gap: 6px; }
.at-vis-badge { font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 99px; }
.at-vis-up    { background: rgba(40,180,80,0.12);  color: var(--green); }
.at-vis-low   { background: rgba(255,200,60,0.10); color: var(--gold);  }
.at-vis-down  { background: rgba(200,80,60,0.10);  color: var(--red);   }

/* Night sky grid */
.at-night-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: 10px; margin-bottom: 14px; }
.at-night-obj {
  background: var(--bg3); border: 1px solid var(--bd);
  border-radius: 8px; padding: 10px 12px;
}
.at-night-obj-icon { font-size: 22px; margin-bottom: 4px; }
.at-night-obj-name { font-size: 12px; font-weight: 700; color: var(--txt); }
.at-night-obj-type { font-size: 10px; color: var(--txt3); margin-bottom: 5px; }
.at-night-obj-alt  { font-size: 11px; color: var(--txt2); }
.at-night-obj-rating { font-size: 10px; margin-top: 4px; }

/* Compass canvas */
#polaris-compass, #crux-compass { display: block; margin: 12px auto 0; }

/* Empty state */
#at-empty-state {
  text-align: center; padding: 56px 24px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.at-empty-icon  { font-size: 48px; opacity: 0.2; }
.at-empty-title { font-size: 16px; font-weight: 600; color: var(--txt2); }
.at-empty-sub   { font-size: 13px; color: var(--txt3); }

/* Footer */
#at-footer {
  background: var(--bg2); border-top: 1px solid var(--bd);
  padding: 10px 20px;
  display: flex; align-items: center; justify-content: center;
  gap: 8px; flex-wrap: wrap;
  font-size: 12px; color: var(--txt3);
}
#at-footer a { color: var(--acc); text-decoration: none; font-weight: 600; }
#at-footer a:hover { opacity: 0.75; }
.at-ft-sep { opacity: 0.35; }