*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#1e1b4b,#312e81);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.join-card{background:#fff;border-radius:24px;padding:3rem;max-width:420px;width:100%;text-align:center;box-shadow:0 25px 50px -12px #00000040}.join-logo{width:80px;height:80px;background:linear-gradient(135deg,#8b5cf6,#6366f1);border-radius:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem}.join-logo i{font-size:2.5rem;color:#fff}.join-title{font-size:1.75rem;font-weight:700;color:#1f2937;margin-bottom:.5rem}.join-subtitle{color:#6b7280;margin-bottom:2rem}.join-form{margin-bottom:1.5rem}.code-input-group{display:flex;gap:.5rem;justify-content:center;margin-bottom:1.5rem}.code-input{width:48px;height:56px;text-align:center;font-size:1.5rem;font-weight:700;border:2px solid #e5e7eb;border-radius:12px;text-transform:uppercase;transition:all .2s}.code-input:focus{outline:none;border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf61a}.join-btn{width:100%;padding:1rem;background:linear-gradient(135deg,#8b5cf6,#6366f1);color:#fff;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}.join-btn:hover{transform:translateY(-2px);box-shadow:0 8px 16px #8b5cf666}.join-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.error-message{background:#fef2f2;color:#dc2626;padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem;font-size:.875rem}.join-footer{color:#9ca3af;font-size:.875rem}.join-footer a{color:#8b5cf6;text-decoration:none}.join-footer a:hover{text-decoration:underline}