.register-page{width:100%;max-width:520px;margin:40px auto;padding:0 18px}.register-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px}.register-title{margin:0;font-size:28px;line-height:1.2}.register-subtitle{color:var(--muted);margin:8px 0 24px;font-size:14px;line-height:1.5}.register-errors{background:#ff003314;border:1px solid #ff003359;border-radius:10px;margin-bottom:20px;padding:12px 14px}.register-errors ul{margin:0;padding-left:18px}.register-errors li{margin:4px 0;font-size:13px}.form-group{margin-bottom:18px}.form-label{margin-bottom:7px;font-size:13px;font-weight:700;display:block}.form-input{border:1px solid var(--border);width:100%;height:44px;color:var(--text);background:#111;border-radius:9px;outline:none;padding:0 13px;font-size:15px;transition:border-color .2s,box-shadow .2s}.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #ff00331a}.form-help{color:var(--muted);margin-top:6px;font-size:12px;line-height:1.4}.username-field{border:1px solid var(--border);background:#111;border-radius:9px;align-items:center;transition:border-color .2s,box-shadow .2s;display:flex;overflow:hidden}.username-field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #ff00331a}.username-prefix{color:var(--muted);padding-left:13px;font-size:15px}.username-field .form-input{box-shadow:none;border:0;border-radius:0;padding-left:3px}.register-submit{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:22px;width:100%;min-height:44px;margin-top:4px;font-size:14px;font-weight:700;transition:background .2s}.register-submit:hover{background:var(--accent-hover)}.register-login{text-align:center;color:var(--muted);margin:20px 0 0;font-size:13px}.register-login a{color:#fff;font-weight:700}.register-login a:hover{color:var(--accent)}@media (width<=600px){.register-page{margin-top:20px;padding:0 10px}.register-card{padding:22px 17px}.register-title{font-size:24px}.form-input,.username-prefix{font-size:16px}}