:root{
    --ink-0:#0A0C0F;
    --ink-1:#12151A;
    --ink-2:#1C2028;
    --steel:#8A93A0;
    --bone:#E9E6DE;
    --gold:#F2B705;
    --gold-dim:#8A6C10;
    --red:#B23A2E;
    --line:#2A2F38;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--ink-0);
    color:var(--bone);
    font-family:'IBM Plex Sans', sans-serif;
    min-height:100vh;
    position:relative;
    overflow-x:hidden;
  }
  /* faint city glow backdrop */
  body::before{
    content:"";
    position:fixed; inset:0;
    background:
      radial-gradient(600px 300px at 15% 0%, rgba(242,183,5,0.06), transparent 60%),
      radial-gradient(500px 260px at 85% 10%, rgba(178,58,46,0.07), transparent 60%);
    pointer-events:none;
    z-index:0;
  }
  .wrap{
    position:relative;
    z-index:1;
    max-width:820px;
    margin:0 auto;
    padding:56px 24px 40px;
  }
  .eyebrow{
    font-family:'JetBrains Mono', monospace;
    letter-spacing:0.18em;
    text-transform:uppercase;
    font-size:12px;
    color:var(--gold-dim);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:18px;
  }
  .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--gold);
    box-shadow:0 0 8px 1px rgba(242,183,5,0.7);
    animation:pulse 2.4s ease-in-out infinite;
    flex-shrink:0;
  }
  @keyframes pulse{
    0%,100%{opacity:1;}
    50%{opacity:0.35;}
  }
  h1{
    font-family:'Oswald', sans-serif;
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:0.01em;
    font-size:clamp(30px,5vw,46px);
    line-height:1.05;
    margin:0 0 6px;
    color:var(--bone);
  }
  h1 span{color:var(--gold);}
  .sub{
    color:var(--steel);
    font-size:15px;
    max-width:52ch;
    margin:0 0 40px;
    line-height:1.55;
  }

  /* HERO CLOCK */
  .clock-card{
    background:linear-gradient(180deg,var(--ink-1),var(--ink-2));
    border:1px solid var(--line);
    border-radius:4px;
    padding:32px 28px 28px;
    position:relative;
    overflow:hidden;
  }
  .clock-card::after{
    content:"";
    position:absolute; left:0; right:0; top:0; height:2px;
    background:linear-gradient(90deg,transparent,var(--gold),transparent);
    opacity:0.6;
  }
  .clock-label{
    font-family:'JetBrains Mono',monospace;
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--steel);
    display:flex;
    justify-content:space-between;
    margin-bottom:14px;
  }
  .clock-label b{color:var(--gold); font-weight:600;}
  .digits{
    font-family:'JetBrains Mono',monospace;
    font-weight:700;
    font-size:clamp(46px,10vw,84px);
    letter-spacing:0.02em;
    color:var(--bone);
    line-height:1;
    display:flex;
    align-items:baseline;
    gap:2px;
  }
  .digits .colon{
    color:var(--gold);
    animation:blink 1s steps(1) infinite;
  }
  @keyframes blink{50%{opacity:0.15;}}
  .clock-date{
    margin-top:10px;
    color:var(--steel);
    font-size:14px;
    font-family:'JetBrains Mono',monospace;
  }

  /* CONVERTER */
  .panel{
    margin-top:28px;
    background:var(--ink-1);
    border:1px solid var(--line);
    border-radius:4px;
    padding:26px 28px 28px;
  }
  .panel h2{
    font-family:'Oswald',sans-serif;
    text-transform:uppercase;
    font-size:15px;
    letter-spacing:0.1em;
    color:var(--steel);
    margin:0 0 20px;
    font-weight:600;
  }
  .row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
    margin-bottom:18px;
  }
  @media(max-width:560px){ .row{grid-template-columns:1fr;} }
  label{
    display:block;
    font-family:'JetBrains Mono',monospace;
    font-size:11px;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--steel);
    margin-bottom:8px;
  }
  select{
    width:100%;
    background:var(--ink-0);
    border:1px solid var(--line);
    color:var(--bone);
    font-family:'IBM Plex Sans',sans-serif;
    font-size:15px;
    padding:11px 12px;
    border-radius:3px;
    outline:none;
    transition:border-color .15s ease;
    color-scheme:dark;
  }
  select:focus{
    border-color:var(--gold);
  }
  select{appearance:none; cursor:pointer;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6'><path d='M0 0l5 6 5-6z' fill='%238A93A0'/></svg>");
    background-repeat:no-repeat;
    background-position:right 14px center;
    padding-right:32px;
  }

  /* CUSTOM DATE / TIME PICKERS */
  .picker-wrap{ position:relative; }
  .picker-btn{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    background:var(--ink-0);
    border:1px solid var(--line);
    color:var(--bone);
    font-family:'JetBrains Mono',monospace;
    font-size:15px;
    padding:11px 12px;
    border-radius:3px;
    outline:none;
    cursor:pointer;
    transition:border-color .15s ease;
  }
  .picker-btn:hover{ border-color:#3A4150; }
  .picker-btn:focus, .picker-btn.open{ border-color:var(--gold); }
  .picker-icon{
    width:16px; height:16px;
    color:var(--steel);
    flex-shrink:0;
    transition:color .15s ease;
  }
  .picker-btn:hover .picker-icon,
  .picker-btn.open .picker-icon{ color:var(--gold); }

  .picker-panel{
    position:absolute;
    top:calc(100% + 6px);
    left:0;
    z-index:30;
    background:var(--ink-1);
    border:1px solid var(--line);
    border-radius:4px;
    box-shadow:0 10px 28px rgba(0,0,0,0.45);
    padding:14px;
    width:260px;
    max-width:calc(100vw - 64px);
  }

  /* calendar */
  .cal-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-family:'JetBrains Mono',monospace;
    font-size:13px;
    color:var(--bone);
    margin-bottom:10px;
  }
  .cal-nav{
    background:none;
    border:1px solid var(--line);
    color:var(--steel);
    width:26px; height:26px;
    border-radius:3px;
    cursor:pointer;
    font-size:15px;
    line-height:1;
    transition:border-color .15s ease, color .15s ease;
  }
  .cal-nav:hover{ border-color:var(--gold); color:var(--gold); }
  .cal-weekdays{
    display:grid;
    grid-template-columns:repeat(7,1fr);
    text-align:center;
    font-family:'JetBrains Mono',monospace;
    font-size:10.5px;
    letter-spacing:0.05em;
    color:var(--gold-dim);
    margin-bottom:4px;
  }
  .cal-grid{
    display:grid;
    grid-template-columns:repeat(7,1fr);
    gap:2px;
  }
  .cal-day{
    aspect-ratio:1;
    display:flex;
    align-items:center;
    justify-content:center;
    background:none;
    border:none;
    border-radius:3px;
    color:var(--bone);
    font-family:'JetBrains Mono',monospace;
    font-size:12.5px;
    cursor:pointer;
    transition:background .12s ease, color .12s ease;
  }
  .cal-day:hover{ background:var(--ink-2); }
  .cal-day.muted{ color:#3A414C; }
  .cal-day.today{ box-shadow:inset 0 0 0 1px var(--gold-dim); }
  .cal-day.selected{
    background:var(--gold);
    color:var(--ink-0);
    font-weight:700;
  }

  /* time columns */
  .time-panel{ width:190px; }
  .time-columns{
    display:grid;
    grid-template-columns:1fr 1fr 1fr;
    gap:8px;
  }
  .time-col{
    height:168px;
    overflow-y:auto;
    scrollbar-width:thin;
    border-radius:3px;
  }
  .time-col::-webkit-scrollbar{ width:5px; }
  .time-col::-webkit-scrollbar-thumb{ background:var(--line); border-radius:3px; }
  .time-cell{
    display:block;
    width:100%;
    background:none;
    border:none;
    color:var(--bone);
    font-family:'JetBrains Mono',monospace;
    font-size:13px;
    text-align:center;
    padding:6px 0;
    cursor:pointer;
    border-radius:3px;
    transition:background .12s ease, color .12s ease;
  }
  .time-cell:hover{ background:var(--ink-2); }
  .time-cell.selected{
    background:var(--gold);
    color:var(--ink-0);
    font-weight:700;
  }
  .picker-ok-btn{
    width:100%;
    margin-top:12px;
    background:var(--gold);
    color:var(--ink-0);
    border:none;
    border-radius:3px;
    font-family:'JetBrains Mono',monospace;
    font-size:12px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    font-weight:700;
    padding:9px 0;
    cursor:pointer;
    transition:filter .12s ease;
  }
  .picker-ok-btn:hover{ filter:brightness(1.08); }
  .result{
    margin-top:6px;
    border-top:1px solid var(--line);
    padding-top:20px;
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:10px;
  }
  .result .val{
    font-family:'JetBrains Mono',monospace;
    font-size:26px;
    font-weight:700;
    color:var(--gold);
  }
  .result .zone{
    color:var(--steel);
    font-size:13px;
    font-family:'JetBrains Mono',monospace;
  }
  .swap-hint{
    color:var(--steel);
    font-size:12.5px;
    margin-top:10px;
    line-height:1.5;
  }
  .toggle-group{
    display:inline-flex;
    border:1px solid var(--line);
    border-radius:3px;
    overflow:hidden;
    margin-bottom:22px;
  }
  .toggle-btn{
    font-family:'JetBrains Mono',monospace;
    font-size:12px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--steel);
    background:var(--ink-0);
    border:none;
    padding:10px 16px;
    cursor:pointer;
    transition:background .15s ease, color .15s ease;
  }
  .toggle-btn + .toggle-btn{
    border-left:1px solid var(--line);
  }
  .toggle-btn:hover{ color:var(--bone); }
  .toggle-btn.active{
    background:var(--gold);
    color:var(--ink-0);
    font-weight:700;
  }
  footer{
    margin-top:36px;
    color:var(--steel);
    font-size:12px;
    font-family:'JetBrains Mono',monospace;
    text-align:center;
    opacity:0.7;
  }
  a{color:var(--gold); text-decoration:none;}
  a:hover{text-decoration:underline;}

  /* skyline signature */
  .skyline{
    display:block;
    width:100%;
    height:auto;
    margin-top:44px;
    opacity:0.85;
  }
  @media (prefers-reduced-motion: reduce){
    .dot, .digits .colon{ animation:none; }
  }

/* SITE NAV */
.site-nav{
  display:flex;
  gap:20px;
  margin-bottom:32px;
  font-family:'JetBrains Mono',monospace;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:0.08em;
}
.site-nav a{
  color:var(--steel);
  text-decoration:none;
  padding-bottom:5px;
  border-bottom:2px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
.site-nav a:hover{ color:var(--bone); }
.site-nav a.active{ color:var(--gold); border-color:var(--gold); }

/* number inputs (manual entry, e.g. cooldown / buffer / other-energy) */
input[type="number"]{
  width:100%;
  background:var(--ink-0);
  border:1px solid var(--line);
  color:var(--bone);
  font-family:'JetBrains Mono',monospace;
  font-size:15px;
  padding:11px 12px;
  border-radius:3px;
  outline:none;
  transition:border-color .15s ease;
  color-scheme:dark;
}
input[type="number"]:focus{ border-color:var(--gold); }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button{ opacity:0.5; }
.field-pair{
  display:flex;
  align-items:center;
  gap:8px;
}
.field-pair span{
  color:var(--steel);
  font-family:'JetBrains Mono',monospace;
  font-size:12px;
}
.hint-text{
  color:var(--steel);
  font-size:12px;
  margin-top:6px;
  line-height:1.5;
}

/* STAT CARDS (results summary) */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:6px;
}
@media(max-width:640px){ .stat-grid{ grid-template-columns:1fr; } }
.stat-card{
  background:var(--ink-0);
  border:1px solid var(--line);
  border-radius:4px;
  padding:16px 16px 14px;
}
.stat-card .label{
  font-family:'JetBrains Mono',monospace;
  font-size:10.5px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:8px;
}
.stat-card .value{
  font-family:'JetBrains Mono',monospace;
  font-size:22px;
  font-weight:700;
  color:var(--gold);
  line-height:1.15;
}
.stat-card .sub-value{
  font-family:'JetBrains Mono',monospace;
  font-size:11.5px;
  color:var(--steel);
  margin-top:4px;
}

/* DOSE SCHEDULE TIMELINE */
.dose-list{
  margin-top:22px;
  border-top:1px solid var(--line);
  padding-top:18px;
}
.dose-row{
  display:grid;
  grid-template-columns:34px 1fr auto;
  align-items:center;
  gap:14px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.dose-row:last-child{ border-bottom:none; }
.dose-num{
  width:28px; height:28px;
  border-radius:50%;
  border:1px solid var(--gold-dim);
  color:var(--gold);
  font-family:'JetBrains Mono',monospace;
  font-size:12px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.dose-times{
  font-family:'JetBrains Mono',monospace;
  font-size:13.5px;
  color:var(--bone);
  line-height:1.5;
}
.dose-times .secondary{
  color:var(--steel);
  font-size:12px;
  display:block;
}
.dose-energy{
  font-family:'JetBrains Mono',monospace;
  font-size:14px;
  color:var(--gold);
  font-weight:700;
  text-align:right;
  white-space:nowrap;
}
.dose-energy .cap-tag{
  display:block;
  font-size:10px;
  color:var(--steel);
  font-weight:400;
  text-transform:uppercase;
  letter-spacing:0.05em;
}

/* WARNING / INFO BOXES */
.notice{
  margin-top:18px;
  border:1px solid var(--line);
  border-left:3px solid var(--gold-dim);
  border-radius:3px;
  padding:12px 14px;
  font-size:13px;
  color:var(--steel);
  line-height:1.55;
}
.notice.warn{ border-left-color:var(--red); }
.notice strong{ color:var(--bone); }

/* small segmented toggle used inline next to a label */
.mini-toggle{
  display:inline-flex;
  border:1px solid var(--line);
  border-radius:3px;
  overflow:hidden;
}
.mini-toggle .toggle-btn{ padding:8px 14px; font-size:11.5px; }

fieldset{
  border:none;
  padding:0;
  margin:0 0 22px;
}
legend{
  font-family:'JetBrains Mono',monospace;
  font-size:11px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:8px;
  padding:0;
}

.field-solo{ margin-bottom:18px; }

.hidden{ display:none !important; }