:root {
  --bg: #0c0e16;
  --bg-card: #141724;
  --bg-input: #0a0c14;
  --text: #e4e6f0;
  --text-secondary: #8e92a8;
  --text-muted: #5a5e72;
  --primary: #22d3ee;
  --primary-dark: #0891b2;
  --secondary: #a78bfa;
  --accent: #34d399;
  --error: #fb7185;
  --border: rgba(34,211,238,0.08);
  --border-strong: rgba(34,211,238,0.2);
  --shadow: 0 4px 14px rgba(0,0,0,0.4);
  --radius: 12px;
  --font: 'Inter',-apple-system,sans-serif;
  --transition: 0.25s ease;
  --glass: rgba(20,23,36,0.92);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}

.header{background:var(--glass);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.header-inner{max-width:800px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:8px}
.logo h1{font-size:1rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.compat-badge{font-size:0.72rem;padding:4px 10px;border-radius:20px;font-weight:500}
.compat-badge.supported{background:rgba(52,211,153,0.1);color:var(--accent);border:1px solid rgba(52,211,153,0.2)}
.compat-badge.unsupported{background:rgba(251,113,133,0.1);color:var(--error);border:1px solid rgba(251,113,133,0.2)}

.main{max-width:800px;margin:0 auto;padding:20px}

.hero{text-align:center;padding:30px 20px 20px;margin-bottom:16px}
.hero h2{font-size:1.4rem;font-weight:700;margin-bottom:8px;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{color:var(--text-secondary);font-size:0.88rem;max-width:500px;margin:0 auto}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}
.card h3{font-size:0.92rem;font-weight:600;margin-bottom:8px;color:var(--primary)}
.text-muted{font-size:0.82rem;color:var(--text-secondary);margin-bottom:14px}

/* Tabs */
.tabs{display:flex;gap:4px;margin-bottom:16px;flex-wrap:wrap}
.tab{padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-secondary);font-family:var(--font);font-size:0.78rem;font-weight:500;cursor:pointer;transition:all var(--transition)}
.tab:hover{border-color:var(--primary);color:var(--primary)}
.tab.active{background:rgba(34,211,238,0.08);border-color:var(--primary);color:var(--primary)}
.tab-content{display:none}
.tab-content.active{display:block}

/* Steps */
.flow-steps{margin:16px 0}
.step{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border);opacity:1;transition:opacity .3s}
.step.pending{opacity:0.4}
.step.active{opacity:1}
.step.done{opacity:1}
.step-num{width:28px;height:28px;border-radius:50%;border:2px solid var(--border-strong);display:flex;align-items:center;justify-content:center;font-size:0.72rem;font-weight:700;color:var(--primary);flex-shrink:0;transition:all .3s}
.step.active .step-num{background:var(--primary);color:var(--bg);border-color:var(--primary)}
.step.done .step-num{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.step-content strong{display:block;font-size:0.82rem;margin-bottom:2px}
.step-content p{font-size:0.75rem;color:var(--text-secondary)}

.input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg-input);color:var(--text);font-family:var(--font);font-size:0.85rem;margin-top:6px;transition:border-color var(--transition)}
.input:focus{outline:none;border-color:var(--primary)}

.btn{padding:8px 16px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-secondary);font-family:var(--font);font-size:0.82rem;font-weight:500;cursor:pointer;transition:all var(--transition);margin-top:14px}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:linear-gradient(135deg,rgba(34,211,238,0.12),rgba(167,139,250,0.12));border-color:var(--primary);color:var(--primary)}
.btn.primary:hover{background:linear-gradient(135deg,rgba(34,211,238,0.2),rgba(167,139,250,0.2))}

.result{margin-top:14px;padding:12px;border-radius:8px;font-size:0.78rem;font-family:monospace;line-height:1.5;word-break:break-all;max-height:200px;overflow:auto}
.result.success{background:rgba(52,211,153,0.06);border:1px solid rgba(52,211,153,0.15);color:var(--accent)}
.result.error{background:rgba(251,113,133,0.06);border:1px solid rgba(251,113,133,0.15);color:var(--error)}

/* Compat Grid */
.compat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-top:10px}
.compat-item{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:0.78rem;display:flex;align-items:center;gap:6px}
.compat-item .status{font-size:0.65rem}

/* Credentials list */
.cred-list{margin:10px 0}
.cred-item{padding:10px;border:1px solid var(--border);border-radius:8px;margin-bottom:6px;font-size:0.78rem}
.cred-item strong{color:var(--primary)}
.cred-item code{font-size:0.68rem;color:var(--text-muted);word-break:break-all}

/* Learn */
.learn-section{margin-bottom:18px}
.learn-section h4{font-size:0.85rem;font-weight:600;margin-bottom:6px;color:var(--secondary)}
.learn-section p,.learn-section li{font-size:0.82rem;color:var(--text-secondary);line-height:1.6}
.learn-section ol,.learn-section ul{padding-left:18px}
.learn-section li{margin-bottom:4px}
.learn-section code{background:rgba(34,211,238,0.08);padding:1px 4px;border-radius:3px;font-size:0.75rem;color:var(--primary)}

@media(max-width:640px){
  .compat-grid{grid-template-columns:1fr 1fr}
}