/* Base and variables */
:root{
  --bg0: #0b0c10;
  --bg1: #0f1117;
  --card: rgba(255,255,255,0.06);
  --card-2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.10);
  --text: #e6e6e6;
  --muted: #9aa4b2;
  --accent: #7c3aed;   /* purple */
  --accent-2: #00c6ff; /* cyan */
  --ok: #22c55e;
  --warn: #f59e0b;
  --err: #ef4444;
  --shadow: 0 20px 60px rgba(0,0,0,.45), 0 10px 30px rgba(124,58,237,.20);
}

*,
*::before,
*::after{
  box-sizing: border-box;
}

html, body{
  height: 100%;
}

body{
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 10% -10%, rgba(124,58,237,.25), transparent 60%),
    radial-gradient(900px 700px at 110% 20%, rgba(0,198,255,.18), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 60%);
  overflow-x: hidden;
}

/* Ambient glow blob */
.glow{
  position: fixed;
  left: 50%;
  top: -20vmax;
  width: 90vmax;
  height: 90vmax;
  transform: translateX(-50%);
  background:
    radial-gradient(closest-side, rgba(124,58,237,.18), rgba(124,58,237,0) 60%),
    radial-gradient(closest-side, rgba(0,198,255,.16), rgba(0,198,255,0) 60%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
  animation: drift 24s ease-in-out infinite alternate;
}

@keyframes drift{
  from{ transform: translateX(-55%) translateY(0); }
  to{ transform: translateX(-45%) translateY(2vmax); }
}

/* Confetti canvas behind everything */
#fx{
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* Layout wrapper to center the card */
.wrap{
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

/* Card (glass) */
.card{
  width: 100%;
  max-width: 980px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  padding: 28px;
}

h1{
  margin: 0 0 8px 0;
  font-size: 28px;
  line-height: 1.2;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sub{
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.5;
  margin-bottom: 18px;
}

/* Form grid row */
.row{
  display: grid;
  grid-template-columns: 1fr 140px 220px 140px;
  gap: 14px;
  align-items: end;
  margin-bottom: 16px;
}

.long{ min-width: 220px; }

label{
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 6px 2px;
}

input, select, button{
  height: 44px;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 0 12px;
  font-size: 14.5px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, transform .06s ease-in-out, background .2s ease;
}

input::placeholder{ color: #7e8a99; }

input:hover, select:hover{
  background: rgba(255,255,255,0.08);
  border-color: rgba(124,58,237,.35);
}

input:focus, select:focus{
  border-color: rgba(0,198,255,.55);
  box-shadow: 0 0 0 4px rgba(0,198,255,.15);
}

/* Native select caret subtle tweak (optional safe) */
select{
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, #aab4c0 50%),
    linear-gradient(135deg, #aab4c0 50%, transparent 50%),
    linear-gradient(to right, transparent, transparent);
  background-position:
    calc(100% - 18px) 18px,
    calc(100% - 12px) 18px,
    100% 0;
  background-size: 6px 6px, 6px 6px, 2.5em 2.5em;
  background-repeat: no-repeat;
  padding-right: 34px;
}

/* Primary button */
button{
  background: linear-gradient(180deg, var(--accent-2), #0072ff);
  color: #031018;
  border: none;
  font-weight: 700;
  letter-spacing: .2px;
  box-shadow: 0 8px 24px rgba(0,114,255,.35), inset 0 -6px 16px rgba(0,0,0,.15);
}

button:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(0,114,255,.45), inset 0 -6px 16px rgba(0,0,0,.18);
}

button:active{
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(0,114,255,.35), inset 0 -6px 16px rgba(0,0,0,.18);
}

button:disabled{
  opacity: .6;
  pointer-events: none;
}

/* Status bar */
.status{
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  min-height: 44px;
}

#text{
  font-size: 14.5px;
  color: var(--text);
}

/* Status dot */
.dot{
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #7a8696;
  box-shadow: 0 0 0 0 rgba(122,134,150,0.0);
  transition: background .2s ease, box-shadow .2s ease;
}

.dot.ok{
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(34,197,94,.18), 0 0 24px rgba(34,197,94,.35);
}

.dot.warn{
  background: var(--warn);
  box-shadow: 0 0 0 4px rgba(245,158,11,.18), 0 0 24px rgba(245,158,11,.35);
}

.dot.err{
  background: var(--err);
  box-shadow: 0 0 0 4px rgba(239,68,68,.18), 0 0 24px rgba(239,68,68,.35);
}

/* Spinner wrapper (right-aligned) */
#spinner{
  margin-left: auto;
  display: none;
}

.spinner{
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.18);
  border-top-color: rgba(0,198,255,.9);
  border-right-color: rgba(0,198,255,.5);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin{ to{ transform: rotate(360deg); } }

/* Tips grid and chips */
.grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.chip{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13.5px;
}

/* KBD-style inline tag */
.kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12.5px;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

/* Help block */
.help{
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
}

/* Footer */
footer{
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  color: var(--muted);
  font-size: 13px;
}

/* Toast (bottom-center) */
.toast{
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: none; /* JS toggles to flex */
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(17, 20, 28, .8);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,.45);
  z-index: 10;
  backdrop-filter: blur(10px);
}

/* First child (dot) is added inline in HTML; ensure it looks right if inline style removed */
.toast > div:first-child{
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--warn);
}

/* Responsiveness */
@media (max-width: 980px){
  .card{ max-width: 820px; }
}

@media (max-width: 860px){
  .row{
    grid-template-columns: 1fr 120px 1fr 120px;
  }
}

@media (max-width: 700px){
  .row{
    grid-template-columns: 1fr;
  }
  button#check{
    height: 48px;
  }
  .grid{
    grid-template-columns: 1fr;
  }
}

/* Better focus-visible */
:focus-visible{
  outline: 2px solid rgba(0,198,255,.65);
  outline-offset: 2px;
}