/* ═══════════════════════════════════════════════════════════
   SKY ENGINE — The Date
   Extends Cosmic Scale AI design language:
   dark navy base · purple/blue accents · Space Grotesk display
   Feature prefix: se-
   ═══════════════════════════════════════════════════════════ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

.se-root{
  --bg:#030712; --bg2:#070B1F; --panel:#05091C;
  --ink:#F8FAFC; --ink-dim:#94A3B8; --ink-faint:#475569;
  --purple:#7C3AED; --blue:#38BDF8;
  --hairline:rgba(148,163,184,.14); --hairline-soft:rgba(148,163,184,.08);
  --heading:'Space Grotesk',sans-serif; --body:'Inter',sans-serif;
  --mono:'IBM Plex Mono',monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
  min-height:100svh; background:var(--bg); color:var(--ink);
  font-family:var(--body); line-height:1.6;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  position:relative;
}
.se-root ::selection{background:rgba(124,58,237,.35);color:#fff}
.se-root a:focus-visible,.se-root button:focus-visible,.se-root input:focus-visible,
.se-root select:focus-visible,.se-root [tabindex]:focus-visible{outline:1px solid var(--blue);outline-offset:3px}

/* ---------- backdrop ---------- */
.se-root::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;background:
  radial-gradient(ellipse 80% 50% at 70% -10%,rgba(56,189,248,.05),transparent 60%),
  radial-gradient(ellipse 70% 55% at 15% 110%,rgba(124,58,237,.08),transparent 60%)}

/* ---------- page ---------- */
.se-page{position:relative;z-index:1;max-width:1280px;margin:0 auto;padding:clamp(7rem,12vh,9rem) clamp(1.25rem,4vw,4rem) 6rem}
.se-kicker{font-family:var(--mono);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-faint);display:flex;align-items:center;gap:.9rem}
.se-kicker::before{content:'';width:38px;height:1px;background:var(--purple)}
.se-head{font-family:var(--heading);font-weight:700;font-size:clamp(2.4rem,6.5vw,5rem);line-height:.98;letter-spacing:-.03em;margin:1.4rem 0 .9rem;max-width:16ch}
.se-head em{font-style:normal;font-weight:300;color:transparent;-webkit-text-stroke:1px rgba(148,163,184,.55)}
.se-lede{color:var(--ink-dim);font-weight:300;font-size:clamp(1rem,1.4vw,1.12rem);max-width:56ch;line-height:1.8}

/* ---------- console ---------- */
.se-console{margin-top:clamp(3rem,7vh,5rem);display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:clamp(1.6rem,3.5vw,3rem);align-items:start}
@media(max-width:960px){.se-console{grid-template-columns:1fr}}

/* ---------- side panels ---------- */
.se-side{display:flex;flex-direction:column;gap:1rem}
.se-panel{background:var(--panel);border:1px solid var(--hairline-soft);padding:1.25rem;border-radius:4px}
.se-lab{font-family:var(--mono);font-size:.6rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:1rem}

.se-field{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.7rem}
.se-field:last-child{margin-bottom:0}
.se-field span{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-dim)}
.se-field select,.se-field input[type=number]{
  --fg:var(--ink);
  background:var(--bg);color:var(--fg);border:1px solid var(--hairline);border-radius:3px;
  font-family:var(--mono);font-size:.82rem;letter-spacing:.03em;
  padding:.55rem .6rem;min-width:0;flex:0 1 auto;transition:border-color .3s;appearance:auto
}
.se-field select{flex:1 1 auto;cursor:pointer}
.se-field input[type=date],.se-field input[type=time]{
  background:var(--bg);color:var(--ink);border:1px solid var(--hairline);border-radius:3px;
  font-family:var(--mono);font-size:.82rem;padding:.55rem .6rem;color-scheme:dark;transition:border-color .3s
}
.se-field select:focus,.se-field input:focus{border-color:rgba(56,189,248,.5)}

.se-custom{margin-top:.9rem;padding-top:.9rem;border-top:1px solid var(--hairline-soft)}
.se-custom[hidden]{display:none}
.se-note{font-size:.72rem;color:var(--ink-faint);margin-top:.6rem;font-weight:300}

.se-row{display:flex;gap:.6rem;margin-top:.4rem}
.se-btn{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-dim);background:none;border:1px solid var(--hairline);border-radius:3px;
  padding:.62rem .9rem;cursor:pointer;transition:.3s;flex:1
}
.se-btn:hover{color:var(--ink);border-color:rgba(148,163,184,.4)}
.se-btn.se-accent{color:var(--blue);border-color:rgba(56,189,248,.4)}
.se-btn.se-accent:hover{background:rgba(56,189,248,.08)}

.se-toggles{display:flex;flex-direction:column;gap:.55rem}
.se-tog{
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-dim);background:none;border:1px solid var(--hairline-soft);border-radius:3px;
  padding:.7rem .85rem;cursor:pointer;transition:.3s;text-align:left
}
.se-tog span{color:var(--ink-faint);transition:color .3s}
.se-tog:hover{color:var(--ink);border-color:rgba(148,163,184,.3)}
.se-tog.on{color:var(--ink);border-color:rgba(124,58,237,.45);background:rgba(124,58,237,.07)}
.se-tog.on span{color:var(--blue)}

/* readout */
.se-cell{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.4rem 0;
  border-bottom:1px solid var(--hairline-soft)}
.se-cell:last-of-type{border-bottom:none}
.se-cell span{font-family:var(--mono);font-size:.54rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint)}
.se-cell b{font-family:var(--mono);font-size:.72rem;font-weight:500;color:var(--ink);text-align:right;letter-spacing:.02em}
.se-band{margin-top:.9rem;padding:.55rem .7rem;font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;color:var(--blue);
  border:1px solid rgba(56,189,248,.25);border-radius:3px}
.se-band.warn{color:#FBBF24;border-color:rgba(251,191,36,.35)}

.se-hint{margin-top:.4rem;font-family:var(--mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);display:flex;align-items:center;gap:.7rem;line-height:1.6}

/* ---------- stage / chart ---------- */
.se-stage-wrap{min-width:0}
.se-stage{
  position:relative;border:1px solid var(--hairline-soft);border-radius:4px;overflow:hidden;
  background:#04070f
}
.se-stage-top{position:absolute;top:0;left:0;right:0;z-index:2;display:flex;align-items:center;justify-content:space-between;
  padding:.8rem 1rem;pointer-events:none;mix-blend-mode:difference}
.se-stage-city{font-family:var(--mono);font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim)}
.se-stage-status{font-family:var(--mono);font-size:.56rem;letter-spacing:.2em;color:var(--ink-dim);display:flex;align-items:center;gap:.45rem}
.se-stage-status i{width:6px;height:6px;border-radius:50%;background:var(--blue);box-shadow:0 0 8px var(--blue);animation:sePulse 2.4s ease-in-out infinite}
@keyframes sePulse{0%,100%{opacity:.4}50%{opacity:1}}

.se-canvas{display:block;width:100%;aspect-ratio:1 / 1.02;max-height:78vh;cursor:grab;touch-action:pan-y}
.se-canvas.dragging{cursor:grabbing}
.se-legend{position:absolute;bottom:.6rem;left:1rem;font-family:var(--mono);font-size:.54rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-faint);pointer-events:none}

.se-sr{font:0/0 a;color:transparent;border:0;clip:rect(0 0 0 0);height:1px;width:1px;margin:-1px;overflow:hidden;padding:0;position:absolute}

/* ---------- mobile overrides ---------- */
@media(max-width:640px){
  .se-head{font-size:clamp(2rem,9vw,2.6rem)}
  .se-hint{flex-wrap:wrap}
  .se-canvas{max-height:64vh}
  .se-field{align-items:stretch;flex-direction:column;gap:.45rem}
  .se-field input[type=number],.se-field select,.se-field input[type=date],.se-field input[type=time]{padding:.7rem .7rem}
}

/* very small phones */
@media(max-width:400px){
  .se-console{gap:1rem}
  .se-row{flex-direction:column}
}

/* ---------- bottom sheet (mobile) ---------- */
.se-bottom-sheet{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:100;
  background:var(--panel);border-top:1px solid var(--hairline);
  border-radius:16px 16px 0 0;max-height:70vh;overflow-y:auto;
  transform:translateY(100%);transition:transform .3s var(--ease-out);
  padding:1rem;padding-bottom:calc(1rem + env(safe-area-inset-bottom));
}
.se-bottom-sheet.open{transform:translateY(0)}
.se-bottom-sheet-handle{
  width:40px;height:4px;background:var(--ink-faint);border-radius:2px;
  margin:0 auto 1rem;cursor:pointer;
}
.se-bottom-sheet-toggle{
  display:none;position:fixed;bottom:1rem;left:50%;transform:translateX(-50%);
  z-index:101;background:var(--purple);color:#fff;border:none;border-radius:24px;
  padding:.6rem 1.2rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;
  text-transform:uppercase;cursor:pointer;box-shadow:0 4px 12px rgba(124,58,237,.4);
}
@media(max-width:768px){
  .se-bottom-sheet{display:block}
  .se-bottom-sheet-toggle{display:flex;align-items:center;gap:.5rem}
  .se-console{display:none}
  .se-console.mobile-open{display:block;position:fixed;inset:0;z-index:100;background:var(--panel);overflow-y:auto;padding:1rem;padding-bottom:calc(1rem + env(safe-area-inset-bottom))}
  .se-canvas{max-height:50vh}
  .se-tog,.se-btn{min-height:44px;min-width:44px}
}

/* ---------- touch targets ---------- */
.se-tog,.se-btn{min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center}
.se-field input,.se-field select{min-height:44px}

@media(prefers-reduced-motion:reduce){
  .se-stage-status i{animation:none}
  .se-tog,.se-btn{transition:none}
}