:root{
  --bg: #0b0c10;
  --card: #12141a;
  --text: #e8eaf0;
  --muted: #9aa1ad;
  --accent: #6c9cff;
  --border: #1f2330;
  --btn: #2a2f3b;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}

.container{width:min(880px,92vw);margin:0 auto}

header{padding:32px 0 8px}
header h1{margin:0 0 6px;font-size:28px}
.muted{color:var(--muted)}

main{display:grid;gap:16px;padding:16px 0 32px}

.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px}
.card h2{margin:0 0 12px;font-size:20px}
.card.info h3{margin:0 0 10px}

.form{display:grid;gap:10px}
.form-row{display:flex;justify-content:space-between;align-items:center;gap:12px}

label{font-weight:600}
input[type=url], textarea, .short-url{width:100%;padding:12px 12px;border-radius:10px;border:1px solid var(--border);background:#0e1117;color:var(--text);outline:none}
textarea{resize:vertical}

.btn{appearance:none;border:1px solid var(--border);background:var(--btn);color:var(--text);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600}
.btn:hover{border-color:#2d3445}
.btn-secondary{background:#1e2230}

.result{display:flex;gap:8px;margin-top:10px}
.short-url{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}

.footer{padding:18px 0 40px;text-align:center}

@media (max-width: 520px){
  .form-row{flex-direction:column;align-items:flex-start}
  .result{flex-direction:column}
}