:root{
  --bg: #1B1F23;
  --card: #23262A;
  --accent: #00A7FF;
  --highlight: #7DF9FF;
  --purple: #A88CFF;
  --green: #16C79A;
  --text: #ffffff;
  --muted: #c4c7cc;
  --glass: rgba(255,255,255,0.03);
  --radius: 12px;
}

/* Reset */
*{box-sizing:border-box;font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,"Helvetica Neue",Arial}
body{margin:0;background:linear-gradient(180deg,var(--bg),#121416);color:var(--text);min-height:100vh}
a{color:var(--accent)}

/* Centered sign-in */
.center-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.card{background:var(--card);border-radius:var(--radius);padding:22px;box-shadow:0 6px 30px rgba(0,0,0,0.6)}
.auth-card{width:420px;max-width:94%}
.brand{text-align:center;margin-bottom:12px}
.brand h1{margin:6px 0;font-size:22px;letter-spacing:0.6px}
.muted{color:var(--muted);font-size:13px}
.logo{height:52px;margin-bottom:6px}
.form label{display:block;margin-top:12px;font-size:13px}
.form input, .form textarea{width:100%;padding:10px 12px;margin-top:6px;border-radius:8px;background:var(--glass);border:1px solid rgba(255,255,255,0.03);color:var(--text)}
.row{display:flex;gap:10px;align-items:center;margin-top:12px}

/* Buttons */
.btn{padding:10px 14px;border-radius:8px;border:0;cursor:pointer;font-weight:600}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--purple));color:#ffffff}
.btn.outline{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--muted)}
.btn.small{padding:6px 10px;font-size:13px}
.btn.ghost{background:transparent;color:var(--accent);border:1px dashed rgba(255,255,255,0.03)}

/* Topbar */
.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;background:rgba(0,0,0,0.1);backdrop-filter: blur(6px)}
.left{display:flex;align-items:center;gap:12px}
.logo-small{height:34px}
.container{max-width:1100px;margin:24px auto;padding:0 18px}
.intro-card{margin-bottom:16px;padding:18px;border-radius:10px;background:linear-gradient(180deg,rgba(0,0,0,0.35),rgba(0,0,0,0.25));box-shadow:0 6px 20px rgba(0,0,0,0.5)}

/* Grid */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.module{min-height:320px;padding:18px}
textarea{resize:vertical}

/* Results */
.result-box{margin-top:12px;background:var(--glass);padding:10px;border-radius:10px;border:1px solid rgba(255,255,255,0.03)}
.result-box img{max-width:100%;height:auto;border-radius:8px;display:block}
.meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px}
.muted.small{font-size:12px;color:var(--muted)}

/* Notes */
.notes ul{margin:8px 0 0 16px;color:var(--muted)}

/* Footer */
.footer{padding:20px;text-align:center;color:var(--muted);font-size:13px;margin-top:30px}

/* Loader */
.loader{width:22px;height:22px;border-radius:50%;border:3px solid rgba(255,255,255,0.06);border-top-color:var(--accent);animation:spin 1s linear infinite}
.hidden{display:none}
@keyframes spin{to{transform:rotate(360deg)}}

/* Responsive */
@media(max-width:900px){.grid{grid-template-columns:1fr}.auth-card{width:100%}}