/* ===== Vibe: neon glass + playful gradients ===== */
:root{
  --bg-1:#0b1020; --bg-2:#0a0e19; --text:#f7f9ff; --muted:#c9d2ff;
  --accent-a:#8a7dff; --accent-b:#6ee7b7; --accent-c:#60a5fa; --accent-d:#f472b6; --accent-e:#f59e0b;
  --card:rgba(255,255,255,.08); --card-border:rgba(255,255,255,.18); --chip:rgba(255,255,255,.10);
  --shadow-1:0 10px 30px rgba(0,0,0,.35); --shadow-2:0 12px 40px rgba(0,0,0,.45);
}

/* Animated background */
@keyframes bg-pan{0%{background-position:0% 50%,100% 50%,50% 100%}50%{background-position:100% 50%,0% 50%,50% 0%}100%{background-position:0% 50%,100% 50%,50% 100%}}
html,body{height:100%}*{box-sizing:border-box}
body{
  margin:0;color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;
  background:
    radial-gradient(1000px 600px at 10% -10%, rgba(138,125,255,.35), transparent 60%),
    radial-gradient(900px 600px at 100% 10%, rgba(96,165,250,.35), transparent 60%),
    linear-gradient(180deg,var(--bg-1),var(--bg-2));
  background-attachment:fixed; animation:bg-pan 18s linear infinite;
}
@media (prefers-reduced-motion:reduce){body{animation:none}}

/* Header */
.site-header{text-align:center;padding:56px 16px 10px}
.site-header h1{
  margin:0 0 6px;font-size:clamp(30px,4vw,52px);letter-spacing:-.02em;font-weight:900;
  background:linear-gradient(90deg,#fff,#bcd1ff 35%,#fff 70%);-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 20px rgba(140,160,255,.25);
}
.subtitle{color:var(--muted);max-width:760px;margin:0 auto}

/* Layout / Cards */
.container{width:min(1100px,92vw);margin:0 auto 90px;display:grid;gap:18px}
.card{
  position:relative;padding:22px;border-radius:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.06));
  border:1px solid var(--card-border);box-shadow:var(--shadow-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:-2px;border-radius:22px;padding:1px;
  background:conic-gradient(from 180deg,rgba(110,231,183,.6),rgba(96,165,250,.6),rgba(244,114,182,.6),rgba(245,158,11,.6),rgba(110,231,183,.6));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;animation:spin 12s linear infinite;pointer-events:none;
}
@keyframes spin{to{transform:rotate(1turn)}}
.card h2{margin:2px 0 14px;font-size:clamp(18px,2.2vw,24px);letter-spacing:-.01em}

/* Form grid */
.form-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;align-items:end}
.field{grid-column:span 2}
.field label{display:block;font-size:12px;color:var(--muted);margin:0 0 6px}
.field input{
  width:100%;border-radius:14px;padding:12px 14px;font-size:16px;color:var(--text);
  background:linear-gradient(180deg,rgba(13,17,40,.9),rgba(10,13,30,.9));
  border:1px solid #283366;outline:none;transition:border-color .15s,box-shadow .15s,transform .06s;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.field input:focus{border-color:#6ea8ff;box-shadow:0 0 0 4px rgba(110,168,255,.18);transform:translateY(-1px)}

/* Options */
.options{grid-column:span 6;display:flex;gap:14px;flex-wrap:wrap;margin-top:4px}
.checkbox{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--muted)}
.checkbox input{appearance:none;width:20px;height:20px;border-radius:6px;border:1px solid #33407a;background:#0d1334;cursor:pointer;transition:border-color .15s}
.checkbox input:checked{
  border-color:transparent;
  background:radial-gradient(10px 10px at 50% 50%,#fff 40%,transparent 41%),linear-gradient(135deg,var(--accent-b),var(--accent-c));
  box-shadow:0 0 0 3px rgba(110,231,183,.25);
}

/* Buttons */
.actions{grid-column:span 6;display:flex;gap:10px;flex-wrap:wrap}
.btn{
  --btn-bg:linear-gradient(135deg,rgba(19,26,58,1),rgba(22,18,46,1));--btn-border:#2a3a83;
  position:relative;appearance:none;border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--text);
  border-radius:14px;padding:12px 16px;font-weight:700;letter-spacing:.2px;cursor:pointer;
  transition:transform .08s,box-shadow .2s,border-color .15s,filter .2s;
  box-shadow:0 8px 20px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);isolation:isolate;
}
.btn::after{content:"";position:absolute;inset:1px;border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,.12),transparent 35%);mix-blend-mode:screen;pointer-events:none}
.btn:hover{transform:translateY(-1px);border-color:#4c62ff;box-shadow:0 12px 28px rgba(40,60,150,.45),inset 0 1px 0 rgba(255,255,255,.08);filter:saturate(1.1)}
.btn:active{transform:translateY(0)}
.btn.primary{--btn-bg:linear-gradient(135deg,var(--accent-b),var(--accent-c) 45%,var(--accent-d));--btn-border:transparent;color:#06121a;text-shadow:0 1px 0 rgba(255,255,255,.3)}
.btn.ghost{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px dashed #3a4aa2}

/* Quick picks */
.quick-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-top:6px}
.quick{
  position:relative;border-radius:16px;padding:14px;font-weight:800;text-align:center;border:1px solid rgba(255,255,255,.18);color:#0e1220;cursor:pointer;
  background:linear-gradient(135deg,rgba(110,231,183,.95),rgba(96,165,250,.95) 35%,rgba(244,114,182,.95) 70%,rgba(245,158,11,.95));
  box-shadow:var(--shadow-2);transition:transform .08s,box-shadow .2s,filter .18s;
}
.quick:hover{transform:translateY(-2px);filter:saturate(1.15);box-shadow:0 16px 36px rgba(25,35,80,.55)}
.quick:active{transform:translateY(0)}

/* Results / chips */
.results{margin-top:16px}
.results h3{margin:0 0 8px;font-size:16px;color:var(--muted)}
.chips{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.chip{
  --ball-grad:radial-gradient(120% 120% at 30% 20%,rgba(255,255,255,.9),rgba(255,255,255,.2) 25%,rgba(0,0,0,.1) 60%);
  --ball-wrap:linear-gradient(135deg,#8a7dff,#60a5fa 40%,#6ee7b7 70%,#f59e0b);
  display:inline-grid;place-items:center;min-width:48px;min-height:48px;aspect-ratio:1/1;padding:0 10px;border-radius:999px;
  font-weight:900;font-size:18px;color:#0b1020;background:var(--ball-grad),var(--ball-wrap);border:1px solid rgba(255,255,255,.6);
  box-shadow:inset 0 -10px 20px rgba(0,0,0,.15),0 8px 22px rgba(0,0,0,.45);user-select:text;
}
.chip.quick{
  --ball-wrap:linear-gradient(135deg,#60a5fa,#8a7dff 40%,#6ee7b7 75%);
  font-size:16px;padding:6px 10px;min-width:40px;min-height:40px;border-radius:12px;
  box-shadow:inset 0 -6px 12px rgba(0,0,0,.12),0 6px 14px rgba(60,90,160,.18);
}
.chip.special{
  --ball-wrap:linear-gradient(135deg,#ffd166,#fde68a 40%,#fbbf24 75%);
  box-shadow:inset 0 -10px 20px rgba(0,0,0,.18),0 10px 26px rgba(255,193,7,.35);
}
@media (max-width:420px){.chip{min-width:44px;min-height:44px;font-size:16px}}

/* Subcards */
.split{display:grid;gap:12px;grid-template-columns:1fr;margin-top:18px}
.subcard{background:linear-gradient(180deg,rgba(12,17,48,.85),rgba(9,13,35,.85));border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:14px;box-shadow:var(--shadow-1)}
.subcard .muted{color:var(--muted);margin-top:-4px}
.subcard .actions{margin:8px 0 10px}
@media (min-width:860px){.split{grid-template-columns:1fr 1fr}}

/* Mobile: stack inputs into two columns: Min | Max on first row, How many full-width on second */
@media (max-width:480px){
  .form-grid{grid-template-columns:repeat(2,1fr);gap:10px;align-items:end}
  .field{grid-column:span 1}
  /* target the count field to span both columns */
  .form-grid .field--count{grid-column:1 / -1}
  .actions{grid-column:1 / -1;display:flex;gap:8px}
}

/* Footer */
.helper{color:var(--muted);font-size:12px;margin-top:10px}
.site-footer{display:flex;justify-content:center;padding:26px 16px 56px;color:var(--muted);font-size:13px}

/* Focus ring */
:focus-visible{outline:2px solid #8ab4ff;outline-offset:2px;border-radius:12px}

/* === Custom numeric steppers: one at each end (left = -, right = +) === */
.has-custom-stepper{appearance:textfield;-moz-appearance:textfield}
.has-custom-stepper::-webkit-outer-spin-button,
.has-custom-stepper::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.num-stepper{
  --stepper-size: clamp(28px, 6vw, 40px);
  --stepper-gap: 6px;
  position:relative;
}
.num-stepper>input[type="number"]{
  padding-left: calc(var(--stepper-size) + var(--stepper-gap) + 6px);
  padding-right: calc(var(--stepper-size) + var(--stepper-gap) + 6px);
}
.stepper-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:var(--stepper-size);height:var(--stepper-size);display:flex;align-items:center;justify-content:center;border-radius:50%;
  border:1px solid rgba(255,255,255,0.06);background:rgba(255,255,255,0.04);
  color:var(--text);font-weight:800;cursor:pointer;font-size:calc(var(--stepper-size) * 0.48);
  box-shadow:none;padding:0;line-height:1;z-index:2;transition:transform .06s,box-shadow .12s,background .12s;
}
.stepper-btn:focus{outline:2px solid rgba(106,153,255,.22);outline-offset:2px;border-radius:50%;}
.stepper-btn:active{transform:translateY(-50%) scale(.98);background:rgba(255,255,255,0.06)}
.stepper-btn svg{width:0.6em;height:0.6em;display:block}
.stepper-btn.minus{left:var(--stepper-gap)}
.stepper-btn.plus{right:var(--stepper-gap)}
.stepper-btn:hover{filter:saturate(1.15);transform:translateY(calc(-50% - 1px))}
.stepper-btn:active,.stepper-btn.active{transform:translateY(-50%);filter:brightness(1.05)}