* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: #1a1a2e; color: #c0d0e0; font-family: monospace; min-height: 100vh; display: flex; flex-direction: column; align-items: center; padding: 40px 20px; }
.card { background: #0f0f1f; border: 1px solid #233; border-radius: 6px; padding: 28px 32px; max-width: 620px; width: 100%; margin-top: 12px; }
h1 { font-size: 20px; color: #64ffda; margin-bottom: 4px; }
.subtitle { color: #667; font-size: 12px; margin-bottom: 24px; text-transform: uppercase; letter-spacing: 1px; }
h2 { font-size: 14px; color: #8af; margin: 18px 0 10px; text-transform: uppercase; letter-spacing: 1px; }
.step { margin-bottom: 22px; }
.step-num { display: inline-block; width: 22px; height: 22px; line-height: 22px; text-align: center; background: #1a3a2a; color: #64ffda; border-radius: 50%; font-size: 11px; margin-right: 8px; }
label { display: block; font-size: 12px; color: #889; margin: 12px 0 4px; text-transform: uppercase; letter-spacing: 0.8px; }
input[type=text] { width: 100%; padding: 8px 10px; font-family: monospace; font-size: 13px; background: #1a1a2e; color: #c0d0e0; border: 1px solid #233; border-radius: 3px; }
input[type=text]:focus { outline: none; border-color: #64ffda; }
.instructions { font-size: 13px; color: #a0b0c0; line-height: 1.6; margin: 10px 0; }
pre { background: #0a0a1a; border: 1px solid #233; border-radius: 4px; padding: 12px 14px; color: #64ffda; font-size: 12px; line-height: 1.5; overflow-x: auto; user-select: all; cursor: text; margin-bottom: 6px; }
button { padding: 10px 18px; font-family: monospace; font-size: 13px; background: #1a3a2a; color: #64ffda; border: 1px solid #2a5a4a; border-radius: 3px; cursor: pointer; transition: all 0.15s; }
.copy-btn { padding: 4px 12px; font-size: 12px; background: #1a2a3a; color: #8af; border: 1px solid #345; }
.copy-btn:hover { background: #234; color: #64ffda; border-color: #64ffda; }
.copy-btn.copied { color: #4caf50; border-color: #4caf50; }
button:hover { background: #2a4a3a; color: #64ffda; border-color: #3a6a5a; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
.error { color: #ff6464; font-size: 13px; margin: 8px 0; }
.success { color: #64ffda; font-size: 14px; margin: 8px 0; }
.hidden { display: none !important; }
.back-link { color: #64ffda; text-decoration: none; font-size: 12px; }
.back-link:hover { text-decoration: underline; }
.warn-line { color: #d8a046; font-size: 12px; margin: 8px 0; }