/* Accessible dark theme, responsive split layout */
:root{
  --bg: #0f1116;
  --panel: #151823;
  --elev: #1b2030;
  --text: #e6e9ef;
  --muted: #9aa4b2;
  --accent: #4ea1ff;
  --accent-2: #2b76d2;
  --danger: #ff6b6b;
  --warn: #ffb453;
  --ok: #45d483;
  --border: #263042;
  --shadow: 0 6px 20px rgba(0,0,0,.35);
  --radius: 12px;
  --focus: 0 0 0 3px rgba(78,161,255,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% -10%, #171a24 0%, var(--bg) 60%);
  color: var(--text);
}
.sr-only{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}

.app-header{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 20px; border-bottom:1px solid var(--border);
  backdrop-filter: saturate(120%) blur(6px);
}
.brand{display:flex; align-items:center; gap:12px}
.logo{filter: drop-shadow(0 4px 10px rgba(78,161,255,.25));}
.app-header h1{font-size:18px; margin:0; letter-spacing:.3px}
.quota{font-size:12px; color:var(--muted)}
.quota .warn{color:var(--warn)}

.layout{display:grid; gap:16px; padding:18px; grid-template-columns: 1.1fr 1fr; align-items:start}
@media (max-width: 980px){ .layout{ grid-template-columns: 1fr; } }

.panel{
  background: linear-gradient(180deg, var(--panel), var(--elev));
  border:1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}

.form-panel .field{margin-bottom:16px}
.form-panel .field.inline{display:flex; align-items:center; gap:12px}
.form-panel .field .spacer{flex:1}

label{display:block; font-weight:600; margin-bottom:8px}
.input-row{display:flex; gap:8px; align-items:stretch}

input[type="text"], input[type="url"], select, textarea{
  width:100%; background:#0c0f16; border:1px solid var(--border);
  color:var(--text); border-radius:10px; padding:10px 12px; outline:none;
}
input:focus, textarea:focus, select:focus{ box-shadow: var(--focus); border-color: var(--accent); }
textarea{ resize: vertical; }

.primary{
  appearance:none; border:none; background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color:white; padding:10px 14px; border-radius:10px; font-weight:700; cursor:pointer;
}
.primary:hover{ filter: brightness(1.05); }
.primary:focus{ outline:none; box-shadow: var(--focus); }

.ghost{ appearance:none; background:transparent; border:1px solid var(--border); color:var(--text);
  padding:8px 10px; border-radius:10px; cursor:pointer; }
.ghost:hover{ border-color: var(--accent); color: var(--accent); }
.ghost.copied{ border-color: var(--ok); color: var(--ok); }

.meta{display:flex; justify-content:space-between; align-items:center; gap:12px; margin-top:6px; font-size:12px; color:var(--muted)}
.counter{color:#c7cedb}

.alert{ border:1px solid var(--border); background:#0e121c; padding:10px 12px; border-radius:10px; margin-bottom:12px }
.alert.error{ border-color:#632e2e; background:linear-gradient(180deg,#251316,#1a0f12); color:#ffb3b3 }
.alert.info{ border-color:#22466d; background:linear-gradient(180deg,#0f2235,#0e1623) }
.alert.warn{ border-color:#6b4b1b; background:linear-gradient(180deg,#251b0a,#1a1308) }

.help{ margin-top:16px; color:var(--muted) }
.help summary{ cursor:pointer }

.preview-panel .serp-card{
  border-radius:12px; border:1px solid var(--border); padding:16px; background:#0c0f16;
}
.serp-card[data-device="desktop"]{ max-width: 680px; }
.serp-card[data-device="mobile"]{ max-width: 620px; }

.serp-url{ color:#93a1b3; font-size:12px; margin-bottom:8px; word-break: break-all; }
.serp-title{ color: var(--accent); font-size:20px; line-height:1.3; margin-bottom:6px; font-weight:600; }
.serp-desc{ color:#cfd6e6; font-size:14px; line-height:1.5; }
.desc-line{ white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.muted{ color: var(--muted); }

.outputs{ margin-top:14px; font-size:13px; color:#cbd3e1; display:grid; gap:6px }
.badge{ display:inline-block; padding:2px 8px; border-radius:999px; border:1px solid var(--border); font-size:11px; }
.badge.ok{ color:var(--ok); border-color: rgba(69,212,131,.35); }
.badge.bad{ color:var(--danger); border-color: rgba(255,107,107,.35); }
.tag{ display:inline-block; font-size:11px; color:#9fb2c8; background:#0f1622; border:1px solid var(--border); padding:2px 6px; border-radius:6px; margin:0 6px; }
.mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color:#9aa7bb }
.ellip{ display:inline-block; max-width:260px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; vertical-align:bottom }

.history{ margin-top:16px }
.history ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px }
.history li{ display:flex; align-items:center; gap:10px; padding:8px 10px; border:1px solid var(--border); border-radius:10px; background:#0c0f16 }

.exports{ margin-top:12px; display:flex; gap:8px }

.app-footer{ text-align:center; color:var(--muted); padding:18px; font-size:12px }