:root {
  --yellow: #FFFC00;
  --yellow-deep: #FFE600;
  --ink: #0B0B12;
  --ink-2: #1A1A24;
  --muted: #8a8a99;
  --card: #ffffff;
  --border: #ececf2;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --radius: 16px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: #f7f7fb;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.hero {
  background: radial-gradient(1200px 500px at 50% -100px, var(--yellow) 0%, var(--yellow-deep) 35%, #fff8a8 70%, #f7f7fb 100%);
  padding: 28px 0 56px;
  text-align: center;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; letter-spacing: -0.01em;
  background: rgba(0,0,0,.85); color: var(--yellow);
  padding: 10px 16px; border-radius: 999px;
}
.ghost { font-size: 22px; }
h1 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05; margin: 24px 0 12px;
  letter-spacing: -0.03em;
}
.subtitle { color: #2a2a36; font-size: 17px; max-width: 600px; margin: 0 auto 28px; }

.tabs {
  display: inline-flex; background: #0B0B12; padding: 6px; border-radius: 999px; gap: 4px;
}
.tab {
  background: transparent; color: #c9c9d4; border: 0; padding: 10px 20px;
  border-radius: 999px; font-weight: 600; cursor: pointer; font-size: 14px;
  transition: all .2s;
}
.tab.active { background: var(--yellow); color: #0B0B12; }

main { padding: 36px 0 80px; }
.tool { display: none; }
.tool.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px);} to {opacity:1; transform:none;} }

h2 { font-size: 28px; letter-spacing: -0.02em; margin: 0 0 4px; }
.muted { color: var(--muted); margin: 0 0 20px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
label { display: block; font-weight: 600; font-size: 13px; margin: 14px 0 6px; color: #44444f; }
label:first-child { margin-top: 0; }
input[type=text], select {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: #fafafe;
  font-size: 15px; outline: none; transition: border .15s;
}
input[type=text]:focus, select:focus { border-color: #0B0B12; background: #fff; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.checkbox { display: flex; align-items: center; gap: 8px; font-weight: 500; margin-top: 12px; cursor: pointer; }
.checkbox input { accent-color: #0B0B12; }

.btn-primary {
  margin-top: 20px; width: 100%; padding: 14px 18px;
  background: #0B0B12; color: var(--yellow);
  border: 0; border-radius: 12px; font-weight: 700; font-size: 15px;
  cursor: pointer; transition: transform .1s, background .2s;
}
.btn-primary:hover { background: #1A1A24; }
.btn-primary:active { transform: scale(.99); }

.results { margin-top: 24px; display: grid; gap: 10px; }
.result-item {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; display: flex; justify-content: space-between; align-items: center;
  gap: 12px; font-size: 15px;
}
.result-item .text { word-break: break-word; }
.copy-btn {
  flex-shrink: 0; background: #f1f1f6; border: 0; padding: 8px 14px;
  border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 13px;
  transition: background .15s;
}
.copy-btn:hover { background: var(--yellow); }

footer { padding: 24px 0; text-align: center; color: var(--muted); font-size: 13px; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: #0B0B12; color: var(--yellow); padding: 12px 20px; border-radius: 999px;
  font-weight: 600; opacity: 0; pointer-events: none; transition: all .25s;
  font-size: 14px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 520px) {
  .row { grid-template-columns: 1fr; }
  h1 { font-size: 36px; }
}